Neenah R-3475-3 Airport Castings: Inlets. over 10,000 pounds are for airport traffic. 8" Wide ACO K100 Trench Drain Grates; 5 1/4'' Wide Polycast 600 Series Grates; 5 3/8" Wide Zurn Z886 Grates; 6'' Wide NDS Dura Slope. Trench drain systems can quickly remove water from these areas, keeping runways and taxiways safe for aircraft and ground vehicles to use. L Trench and Channel Drain Kit with Black Grate (3-Pack : 9. Trench Drain Systems offers exclusive product lines manufactured by TDS. ACO Wildlife - Amphibian eco passages. Products recommended for the airport and ports applications:A trench drainage system acts as an elongated drainage grate, usually on a slope or path. R-4990AX 8 Wide Cut Sheet. Cast iron trench drains are used in ports, truck loading docks and parking areas. Zurn Z883 Shallow Trench Drain By Item; Zurn Z874 Series Trench Drain System; Zurn Z800 Series Fiberglass Trench Drain System;. N/A. We’ve highlighted the importance of quality. 360 Wythe Ave, Brooklyn, New York 11249. The brochure also showcases some of the projects that have used U-drain and provides contact information for dealers and distributors. Installation. The more that you know about these two kinds of drains and the differences between them, the easier it will be to determine which drain is the right. Zurn Z883 Shallow Trench Drain By Item; Zurn Z874 Series Trench Drain System; Zurn Z800 Series Fiberglass Trench Drain System;. This standard classifies the loads in a alphanumeric format ranging from A through F. Aircraft rated trench drains and slotted drains manufactured by Dura Trench. Compare. Compare. 0092012 lf 1. Gulfstream Aerospace Utilizes New DuraTrench Non-Conductive Utility Trench February 13, 2021. ADA compliant designer grates and light duty grates are designed for pedestrian areas. More Options Available $ 152. A cast-in-place trench. Due to the fact that trench drains are so widely applied for all of these different needs, there are many kinds of prefabricated trench drains out there as well as all of the companion products to make your drains work correctly. 1-877-903-7246 . Ductile Iron 4-Piece Grate and Airport Drainage Inlet Frame. 6 Common Drainage Problems and How to Fix Them. Keeping them in good repair and in place over the trench is critical for the well-being of your. XHD grates provide the largest inflow area available in cast grates for 8″, 12″, and 18″ trenches while still far exceeding all FAA load ratings. Where as…. Perforated Galvanized Steel Mesh Galvanized Steel Slotted Galvanized Steel Combee Composite Honeycomb Longitudinal Bar. Zurn Z883 Shallow Trench Drain By Item; Zurn Z874 Series Trench Drain System; Zurn Z800 Series Fiberglass Trench Drain System;. Open Menu. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;Products. Two main standards are used in the US for trench drain: ANSI A112. home • categories • manufacturers • contact • cart. 10 airport fertilizing. There is actually a fairly minimal amount of excavation that is necessary to place trench drains, and it is relatively fast and easy. 10 GPM Weight Per Each: 0. Products. Neenah R-3480-A Airport Castings: Inlets. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;Zurn Z883 Shallow Trench Drain By Item; Zurn Z874 Series Trench Drain System; Zurn Z800 Series Fiberglass Trench Drain System;. Americas. (770) 505-6575. Other setups use French drains to direct runoff along the natural drainage path to the dry well. Carriers & Fixture Supports. 8. (770) 505-6575. (770) 505-6575. Generally, the trench drain grate is 2″ larger than the channel drain throat. Slip Resistance of Trench Drain Grates; SDS (safety data sheets) Hydraulic Design; Chemical Resistance; Material Properties; Advanced Polymers; Trench Drain Joint Sealant; Trash Baskets for Basins; Applications. Plywood – Dura Trench ships their trench with plywood in the top to keep the concrete out and give you a place to brace the trench. Between our expert customer service team and our skilled installations experts, you will have a seamless and painless experience when you. Wildlife Fence Details. Having proper yard drainage redirects excess water away from your yard before soil erosion can occur. NDS Mini Channel Drain Systems are manufactured from durable, lightweight polyolefin and are compatible with standard paving systems that snap together for easy installation. 12"W X 23 7/8"L X 1-1/2"D Heavy-Duty Rated Type A Grate with Type T frame. *Depth is the depth of the water surface during a storm event, depending on the drainage area and conveyance to the bed. Co. Standard sizes up to 48" x 48". INDEX 261 or 295; INDEX 273; Type K Grating F. As you consider adding or upgrading your drainage system, you may have a lot of questions about how the process works. View All. Complete with heavy-duty Dura-Coated steel frame w/ anchor studs at surface,. Co. " In March 2015 MKE approved the 6906 Hinged Trench System by EJ for the airport constructionThe grates on your trench drains are a key part of the correct performance of the entire drainage system. © Savannah Construction and Preservation / Website by Hazel Digital MediaTrench Drain Installation Tips For Existing Concrete - Eric'sons Manufacturing. Effects on the Runway. 21. (770) 505-6575. Choosing the Right Size for Your Trench Drain . Ulma Trench Drain Kits; Ulma D100 Polymer Concrete - Polymer Edge Complete Kits. Different types of surfaces drainage systems are open drains, humps and hollows, levees, and grassed waterways. 18 in. We recently completed a large trench drain project at DFW Airport Hardstand with Austin Bridge and Road. Pool deck trench drains collect water and direct it to a safer output location. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;The Dura Slope trench drain system consists of neutral and pre-sloped sections of trench drain. This general purpose drain can handle flows in the 35 cfs (15,500 gpm) range. 51" Wide Airport Neenah R-4990-OA Series Trench Grate and Frame. Always make sure that you work with a drainage installation expert if you are not sure about which kind of drains you might need in specific areas of your business. Class E and F according to design but not less than class D. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;Ulma Trench Drain Kits; Ulma D100 Polymer Concrete - Polymer Edge Complete Kits; Ulma U100K Polymer Concrete - Galvanized Edge Complete Kits. (770) 505-6575. Silver. R-4990 Forming Instructions. DOT, Military, Marine Port and Airport projects in the Southeastern United States. The project scope included 95,000 sy of 17” PCCP. 37” (1M) nominal length utilizing tongue and grove connections for channel alignment and sealing. OSR Login. In some cases, the ground surface is shaped or graded to create sloping toward the channels. With over 125 years of casting experience, Neenah Foundry Co. usa@bg-graspointner. Why trench drains fail - Part 1. 04% (1/8" [3. We recently completed a large trench drain project at DFW Airport Hardstand with Austin Bridge and Road. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;. has worked with many state transportation departments to design products for the. Backwater Valves, Traps & Primers. Acid Neutralization. ACO Pipe. 2 in. Airports are environments in which drainage solutions with very specific requirements are required. You will need to consider the size of the drains that you want to use, the gratings that you want to place over them, and the slope of the floor or roadway. Our trench drain frames are offerd in steel, stainless steel, iron, plastic, fiberglass, aluminum, brass, and. Shop online or call today 610-638-1221. Employing a solid cover or grating that is flush with the adjoining surface, this. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;3. Modular polymer ducting system with. NDS Pro Series Channel Drains are lightweight, but feature side ribs and thick channel walls for added strength. Zurn Z883 Shallow Trench Drain By Item; Zurn Z874 Series Trench Drain System; Zurn Z800 Series Fiberglass Trench Drain System;. 10" Height. An underdrain is a perforated pipe system in a gravel bed, installed on the4-3/4" Wide Shallow Linear Trench Drain System. Airport Drainage Inlet Frame. See moreAirport trench drains are used to keep airplane hangars, runways and operational facilities dry. Airport Rated Type A,D Grate. Fork lift and heavy truck rated. Trench Dimensions 4. Hinged Trench Drain Installation – General Mitchell International Airport (MKE), Milwaukee, WI Milwaukee's General Mitchell International Airport (MKE) is one of the. For special situations, . 25/. The world’s most popular modular trench drain system. com 518. Product ID R-3475-3. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;External CSF Drainage System Integrated solution for the CSF patient disorder Because we are committed to limiting uncertainty, the Integra External Ventricular Drainage Solution accompanies neurosurgeons and neuro-intensivists in every step from the opening of the cranium to the drainage of CSF. T; INDEX 235; Valve Boxes & Access Covers; Airport Products; 8700 Steel. Dura Trench offers a wide selection of trench drain frames to meet any loading or traffic type, check them out here. East Jordan has a full line of cast iron trench drain grates in heavy duty and extra heavy duty for all applications. There are also many sizes of trench drains that you can choose from, so you will have no trouble removing water runoff from the basement with this solution in place. As water and debris accumulate, the trench drains capture the runoff through the grates. The drain can be. Inches Flow Rate: 1” Head: 124. 039″ thick at grate seat. As water and debris accumulate, the trench drains capture the runoff through the grates. Price $160. (770) 505-6575. Brewery Drainage Chart. 5445 sales. Interceptors. Airport rated trench drains and extreme loads trench drains are difficult to obtain and Vodaland strives to make these rare products easily obtainable for our customers. Design & Documentation. Major airports like Dallas-Ft. Design & Documentation. Design & Documentation. A is the cross-sectional area of the trench drain in square feet. The range comprises modular and durable drainage channels, manufactured from corrosion-resistant polymer concrete. Now it is time to calculate the channel flow capacity to determine what size trench may be required for your application by using this formula: Qc = A* (1. Design & Documentation. Medium Duty. The buildup of water causes hydroplaning which can result in serious accidents from aircraft losing steering and brake control. U. ACO has been manufacturing and supplying products to urban and civil infrastructure projects in Australia for over 25 years and worldwide for over 50 years. Offered with a wide selection of frames and grates to meet any design requirement. Contact Us. Linear Trench Drain. Specs and Installation. Trench drains come with a slope built into the drainage system itself, which can help in areas that are not prepared to offer the right rate of drainage otherwise. Trench drains can be made of different materials based on where it is installed. 25″. Trench Drain Project SheetZurn Z883 Shallow Trench Drain By Item; Zurn Z874 Series Trench Drain System; Zurn Z800 Series Fiberglass Trench Drain System;. Zurn Z883 Shallow Trench Drain By Item; Zurn Z874 Series Trench Drain System; Zurn Z800 Series Fiberglass Trench Drain System;. Since then, we have led the way in the development of products and systems designed for transportation drainage solutions. Hi-Cap® Slotted Drainage System. Our resolution to better our planet extends throughout the company with our employees. Dura Trench TrueRadius™ Trench Drain. Products. S. (770) 505-6575. 5. 23 1/2' x 35 1/2" Dia. We also manufacture several product lines to fill specialized areas. Smooth radius inverts channel sections were shipped fully assembled. Zurn manufactures a complete line of Transportation Linear Trench Drains for a wide variety of applications. management solutions include catch basins or drainage inlets. Luckily, there are a few drainage systems you choose from for your pool: trench, spot, or slot drains. Our standard slot pipe product line is offered in 4″, 6″, 8″, 12″, 15″, 18″, 21″, 24″, and 36″ widths. Large variety of grate options available. 4" Josam Glass Fiber; 4" Ulma Polymer Conc; 4" Ulma Multi-V Conc;The airport consulting engineers configured a series of concrete firestops into each run of trench with the sluice gates that can be remotely activated and closed to prevent fuel from flowing into storm drains in the event of a spill. Frame and Grate Bolted Assembly. Another key benefit of trench drain systems is that they can help to improve airfield safety. 010, fiberglass & GFRPC systems 0. These linear drains are made up of primarily channels, end caps, end outlets, grates, catch basins and some other installation accessories. Two main standards are used in the US for trench drain: ANSI A112. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;Vanguard Fire & Security Systems can help. Stainless Steel Push-Fit Pipes & Fittings. . Trench drain is found in numerous locations at airports, both inside and outside SAFETY High volume, heavy duty 3000 Series™ Trench Drain System installed. Outlets 5. Price Call for Quote. Zurn Z883 Shallow Trench Drain By Item; Zurn Z874 Series Trench Drain System; Zurn Z800 Series Fiberglass Trench Drain System;. Solid and vented cover options. Easy Drain Series Black 90 Degree Corner for Modular Trench and Channel Drain Systems 7-in L x 1-in W Square Corner. Double Ductile Iron 2-Piece Grate and. Trench drain systems can be designed to blend seamlessly into the surrounding environment, providing an aesthetic improvement that can enhance the overall look and feel. As with any installation, careful measurement of the trench depth in which the drain will sit is essential—a slot drain must sit so that it is flush with the surface of the floor or pavement in which it is installed. Pre sloped in a variety of grate options. Dura Trench prefabricated trench drain systems are our most popular product line. 00. Trench Drain Installation Cost for Different Trench Drains. 4 1/2" Height. Furnished in 18" Sections. Variety of trench Drain Gratings available. The grate and edge height shall be +/- 1mm. Pedestrian traffic only: safe load < 2000 lbs. NDS Filcoten Trench Drains are made from high-performance fiber reinforced concrete, designed to handle heavy loads. OSR Login. Installation. These systems, which consist of a channel or trench that is connected to a network of pipes, provide a number of benefits that can improve the overall function and safety of an […]Zurn Z883 Shallow Trench Drain By Item; Zurn Z874 Series Trench Drain System; Zurn Z800 Series Fiberglass Trench Drain System;. Jan 18, 2021 - Explore Ingleside Kennels LLC's board "Drains and Runs" on Pinterest. 39" Wide Trench Drain Grates. R-4990 Catalog Sheet. As with all our Dura Trench linear drainage. NDS Dura Slope is a high quality, dependable and best in class trench drain system that meets a variety ofSend Us a Message. 9" Frame Height. NDS Dura Slope Trench Drain Systems are designed to provide a solution for residential, commercial, and industrial drainage needs. 0. 010, fiberglass & GFRPC systems 0. 21. There are many different levels of load rating. Neenah R-3498-R3S Airport Castings: ManholeFrames and Grates. Always direct the water away from your. Airport extra heavy duty mooring eyes are an effective means of aircraft tie-down. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah. Instructions: The following standards are from AC 150/5370-10, Standards for Specifying Construction of Airports. PDX is available in 7 different interior widths from 6” [152mm] up to 24” [609mm] with depth increments from 0. Specs and Installation. Airport-rated and traffic-rated trench drains. Deep Vertical Bar Grate and. National distributor for superior quality trench drain systems. Their runways have a combination of the largest surfaces to be drained, the traffic with the highest axle and wheel loads, with great axial efforts in manoeuvres and braking, and the highest requirements in terms of safety. Whether you’re looking for replacement cast iron trench grates or a newly installed. R-4990AX E 8 Wide Unbolted Vented Lid. 38" Dia. Stainless steel trench drains are also good at withstanding excessive temperatures and resisting scaling, making them just appropriate for application in facilities that see excessive heat or. Linear trench assemblies with drainage grates are designed for stormwater and/or glycol/de-icing capture — and solid cover versions have many uses, including shorepower vaults at ship berths. Low-Impact Design & Environmental Catalogs. Installation. Neenah Foundry manufactures a wide variety of beautiful cast iron tree grates and fabricated steel tree guards. Where to buy. Trench Drain Systems offers drainage systems to meet any application from residential driveways to airport trench drains. Neenah R-4990 Airport Trench Grates;. ANSI A112. 4 in. 50″ Wide Trench Drain Grates. Design & Documentation. R-4990AX C 8 Wide Unbolted Long Slotted Grate. N/A. Over 600ft of 12″ trench drain on extreme duty frame and 14″ wide DIN class F grate was specified and installed inside the facility. Bolted & security options, lift assists and skid resistant surfaces are available. They are also shaped differently than other standard drainage, having a narrow throat in the drain body, which widens below the surface to accommodate the. 20″ Wide Trench Drain Grates. load rating; extra heavy duty: max 100,000 lbs. Airports. Prefabricated Trench Drains; Radius & Curved Trench Drains; Slot Drain; Stainless Steel Drains – Linear & Floor; Utility Trenches; Trench Forming SystemsDura Trench suggests drainage systems to accumulate any application from inhabiting driveways to airport trench drains system. ACO is committed to designing and producing the best solutions to water management. Or call us at 888-825-4716. ACO Environment - Oil/water separators. All sections are 80-inch modular lengths with integral top frame, inter-locking ends and radiuses bottom. Made of smart materials it is excels in functionality, durability and longevity. OSR Login. n is the coefficient of friction of the trench drain body (concrete forming systems = 0. 4" Wide with Galvanized Edge Polymer Concrete Best Seller . Neenah Foundry has been the market leader for decades with the widest market variety & outstanding durability for water drainage. Load class A is 15 kN (3372 lb), B is 125 kN (28,100 lb), C is 250 kN (56,200 lb), D is 400 kN (89,920 lb), E is 600. Pedestrian traffic only: safe load < 2000 lbs. Trench Drain Length Needed - Please enter the length needed. Zurn Z883 Shallow Trench Drain By Item; Zurn Z874 Series Trench Drain System; Zurn Z800 Series Fiberglass Trench Drain System;. If there is any internal flooding from a bathroom or other water. 25% slopes can be ordered to suit. W x 3. Load More. The project also extended Taxiway K to provide group V aircraft access to the East side of Concourse A. Applications. A trench drain is a linear drainage application used to catch, collect and convey water from a starting location to and an outlet or catch basin. 30" Wide Trench Drain Grates. S. Area drains, storm drains, storm and curb inlets, directional flow (vane grates) or trench grates. Why Do Airports Need Trench Drains? Trench drains play an indispensable role in the effective functioning of airports worldwide with enhanced safety, infrastructure longevity,. There will be a detrimental impact on a surface with an improper surface drainage system, which will then affect the subsurface drainage. The ACO Access range is the industry’s widest range of cover and frame systems comprising both iron and steel. Drainage Area . Products. The expansion of Denver International Airport’s Concourse A East Apron provided room to stage and deice aircraft, and allowed overnight parking for 3 wide body and 6 standard aircraft. 5" , 6" , 8" and 12" wide. OSR Login. These tunnels were under the existing airfield apron (airside) and tied the Main Terminal into the existing Concourse B building for passenger traffic between the two. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;. There are a few main considerations when planning the drainage system for an airport. Trench drains are necessary to deal with this kind of water runoff to prevent accidents and unnecessary risks to air traffic of various kinds that need to pass through the airport daily. The system can be extended upwards of 196 linear feet. HDPE Channel - DGC Grates Standard. 3/4. Safespill, a leader in environmentally safe fire protection systems, announced that the company's core technology — the Safespill flooring system, also known as an ignitable liquid drainage. Top Rated. If you are tired of looking at boring drains that you have installed, or you are worried about people’s heels catching in the grates or other problems to do with the safety of your. Grassy Swale. 12" Wide Airport Neenah R-4993-CB Series Trench Grate and type T Frame. ACO Utility Duct - Polymer ducting system. Each channel measures 12″ wide and comes in 40″ sections. Pool/Spa Drainage Tri-fold. Use an outlet pipe with 4″ diameter in areas that will see fecal matter or hair. Gray Iron Grate and. A range of stainless steel waste push fit pipes and fittings. Blog. Light Duty. Ductile Iron Manhole Solid Lid and Airport Frame -. Product ID 6902M2-Bolted. It is hard to argue that plastic is not an easy and reliable trench drain material for a wide array of drainage needs. Contact Us. While it might be difficult to shut an airport down for a brief time, the rewards of having secure runways with excellent drainage are well worth it. Cleanouts. This drainage system redirects water to a roadway drainage system and disperses it away from the trench drain area. Airport Drainage Inlet Frame - Gray Iron Grate and Frame. To suit many applications, our range of AS 3996 compliant grates, slotted. Our trench grates are offered in the following sizes: 3″ trench drain grates , 5″ trench drain grates , 8″ trench. urban trees. Or call us at 888-825-4716. Neenah R-3477-A Airport Castings: Inlets. Trench Drain Systems. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;EJ USA airport castings are offered in many styles: round or square manhole covers, catch basins, drainage inlets, trench grating and mooring eyes. Installation. The trafficked edges shall meet a specified thickness. Junction Boxes. Learn More. The channels collect and drain water from the surface, providing safety for road surfaces and pedestrian. 00 airport type 2 cable trench 0092060 lf 1. 24 7/8" x 26 5/8" Dia. 29 3/4" Wide BOLTED with Frame TRANSVERSE DRAINAGE STRUCTURE. Neenah R-3492-B Airport Castings: ManholeFrames and Grates. R-4990AX D 8 Wide Unbolted Solid Lid. A trench drain (also channel drain, line drain, slot drain, linear drain or strip drain) is a specific type of floor drain containing a dominant trough- or channel-shaped body. PermaVoid. in. Compact Black 5. These pros will probably be familiar to you if you have ever used a plastic trench drain system in the past. 2) The Terminal apron trench drain stormwater flows initially pass through the OWS units. Digital tools to support trench drainage and surface water management design 24/7 - Visit: the East Boston roadways, these trench drains failed because the impact of traffic dislodged the unbolted grates covering the trench drain. ABT offers polycast trench drains that fit seamlessly in concrete. Linear Trench Drains from Zurn manufactures a full line of General Purpose Drainage Exteriors. We have trench drain frames for pedestrian to aircraft applications. U-drain Brochure 2021 is a PDF document that introduces the features, benefits and installation methods of U-drain, a slot trench drain system that can be used for various residential and commercial applications. load rating. Extra Heavy Duty Airport. When safety is a paramount concern at your location, you will need to be sure that you are using the right kind of drainage to ensure that employees and visitors are safe at all times. Our trench drains provide a durable and reliable solution for any project. pdf. We understand the importance of better utilizing one of our planet's vital resource, water, and are working tirelessly to improve its utilization, collection and reuse. 25″. The 4 mm galvanized steel (or stainless steel) reinforced edges and the particularly stable design of the channels allow them to be used in harbours, container terminals, or in highly frequented public and private areas. d. The versatile design of the 600 Series allows for flow rates equal to or greater than most larger poured-in-place trench drains (470 GPM per outlet attainable with proper components). Trench drainage, also called strip drains, is a very common pool drainage. Linear Trench Drainage Grates. We know each site has unique needs that aren’t the same. A sound trench drain system not only prevents catastrophic floods but preserves. English. Specs and Installation. Not only can these drains be used for airport drainage like at a municipal airport, but also can be used for heavy duty applications such as vehicle parking, commercial. 00 airport temporary berms (type b) 0025030a cuyd 1. Airport Drainage Inlet Frame. Choose from Micro, Mini Slop, FILCOTEN and our PRO Series trench drains. Channels shall be 39. Price $1,264. 1 Neenah Foundry Airport Trench Drain R-4990 Type Grate. Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;Neenah R-4990 Airport Trench Grates; Neenah R-4996 Self Forming Trench Pan; Neenah R-4028 To R-4055 Sewer Pipe Grate; Neenah R-4215 to 4360 Beehive Grates;. Channel slopes can also be adapted to fit any. 59 1/4" x 31" Dia. 4. 2.