Careful engineering reduces the danger of lid “pop-out” in high traffic areas; bolt down is recommended. Proudly made in Australia and compliant with all Australian Standards, our outdoor drainage grates feature marine-grade 316 stainless steel or hot dip galvanised steel to ensure durability. BG-Graspointner offers a comprehensive range of trench drain grates and their associated catch basin grates. 18" Heavy Duty Grate for Corrugated Pipe. from $330 00 from. Common applications include bridge. gst) CMP $. 4” to 12” square. Linear Trench Drainage Grates. Smith Mfg. load rating. Heelguard Grate Only (Stainless Steel) - Steel Builders. Add to basket. MOSINSBO Cast Iron Drain Grate, 20x20 Outdoor Drain Cover, C250 Class Sewer Grate, Durable Heavy Duty Channel Grate, Black Square Drainage Grate for Concrete Floor (19. Ductile iron or cast iron grates are most common. PDX is available in 7 different interior widths from 6” [152mm] up to 24” [609mm] with depth increments from 0. PC7CP. 00 with coupon. Load Class D Grate design load of at least 89,920 lbs per foot. Choose Options. Civilcast Trench Grates are available in Class B and Class D and are suitable for drainage solutions. Fits 6-inch corrugated and sewer and drain pipe. SKU: 170mm2-BLKY. Grate openings/flow areas measure 5″ x 3/4″. Light Duty 5300 Series; Standard Trench Drain Grates 1" to 12" Wide; Large Trench Drain Grates 13" to 51" Wide; More Replacement Grates;Trench Grates. Grate Plates are 3/4" thick and are ideal for placement where a supporting ledge exists in driveways, roadways, and parking lots where Heavy Truck traffic is present. $35. Buy additional Driveway Channel Drain under ASIN B00CFVNCCK. Bead Blast Finish. B-H20G-A: 8: 1-1/2: 6: 78:. VAT Registered: GB 394 1212 63. Heavy Duty. NDS catch basins grates come in a variety of decorative designs and colors, for an attractive design aesthetic. Plastic, brass, chrome, ductile iron. Natotela Galvanized Steel Drain Grate-12x12 in. Channel Drain with Class C Ductile Iron Black. $6. 75x11. FLOOR DRAINS ZURN PLUMBING PRODUCTS GROUPSPECIFICATION DRAINAGE OPERATION, 1801 PITTSBURGH AVENUE, ERIE, PA 16502 PHONE 814/455-0921 FAX: 814/454-7929 WEBSITE:. Configure. Sort By. All raw gray iron grates begin to naturally rust with exposure to any form of moisture and will appear bright orange before settling to brown. Price $210. Dead Level D Trench Drain; BarryCraft Grates More; Light Duty 5300 Series; Standard Trench Drain Grates 1" to 12" Wide; Large Trench Drain Grates 13" to 51" Wide;12 Inch Pro Series. Heavy duty PVC, weatherproof, waterproof and will never rust. US Foundry 6120 Heavy Duty Cast Iron 12" x 24" grate has bottom leveling feet that. Please note that all raw cast iron grates begin to naturally rust with exposure to any form of moisture and will appear bright orange before settling to brown. Wd. Most storm drain grates are made from cast iron, for both strength and resilience. 9 in. EN124-5 D400 CONFIRMED: Maxim 40 ton load rating and allows the truck to drive over Block grates and manholes to stop liquids from going in, or seal inactive drains to keep odors from leaking out. 1. $ 390. XHD 8″, 12″, 18″ advanced heavy-duty trench drain grate design is not only attractive, but it also provides strength and performance. Polylok 24" Heavy Duty Grate for Corrugated Pipe (3008-G24) Visit the Polylok Store. Dead Level D Trench Drain; BarryCraft Grates More; Light Duty 5300 Series; Standard Trench Drain Grates 1" to 12" Wide; Large Trench Drain Grates 13" to 51" Wide; More Replacement Grates; 2 3/4" NDS Mini Channel Trench Drain Grates; 4 1/8 Wide NDS Spee-D Channel Grates; 4 1/8 Wide Zurn Z884 Trench Drain Grates; 4. Everhard 3m EasyDRAIN Polymer Grate. 6903M2 Heavy Duty Cast Iron 12″ x 24″ x 2″ Grate. $42. These are heavy duty trench grates for a moderate cost. What are the shipping options for Drain Grates? All Drain Grates can be shipped to you at home. & 4 in. Check out our full range of floor and area drain products. Rust resistant. Product ID 6903A. Grates are fastened with easy to use PowerLok boltless mechanisms. Product ID 6901M2-Bolted. 14-in Wide Heavy Duty Fiberglass Trench Drain Grate $ 581. The Polylok Heavy Duty Trench Drain is H-20 wheel load rated when cast in reinforced concrete (as per Polylok Trench Drain H-20 Instruction Diagram). FREE delivery Nov 13 - 15 . Add to cart. £ 37 14. ) 4. They are 1 1/2" deep grates. Neenah R-4030 Heavy Duty Sewer Pipe Grate; Neenah R-4040 Light Duty Sewer Pipe Grate; Neenah R-4055 Sewer Pipe Bell; Neenah R-8802 Rectangular Tree Grates;. Lg. The NDS Spee-D channel drains are available in 4ft and 10ft lengths. More Details. Comes with one 24 in. Neenah Foundry manufactures a wide variety of beautiful cast iron tree grates and fabricated steel tree guards. A heavy duty metal grate can handle anything from extremely high heat to freezing temperatures. Sold by MOSINSBO and ships from Amazon Fulfillment. Shop now for the best deals on E600 & F900 Heavy Duty Drain Grates! Explore our range of drain gates, grids and covers with other load rating options: A15 Pedestrian & B125 Driveway Drain Grates; C250 Car Park & Road Drain GratesMetal Drain covers, grates & gully grids, heavy duty strong steel, stainless steel, corten weathering steel long lasting grates made by precision CNC cutting from the latest strongest materials to last. catch basin with 2 openings, 2 outlet adapters which. 36” wd. I. New Grate Designs For safety! Type "AAA" Grate. These grates are rated Extra heavy. Load rating 1,500 lbs. High Quality Wholesale Industrial Stainless Steel 304 Floor Drain with Heavy Duty Drain Grate for Outside. These trench grates are good for industrial drain grates, roadway drain grates, cable trench covers, driveway drain grates, and as a general purpose trench drain grate. Shop now for the best deals on E600 & F900 Heavy Duty Drain Grates! Explore our range of drain gates, grids and covers with other load rating options: A15 Pedestrian & B125 Driveway Drain Grates; C250 Car Park & Road Drain Grates Or call us at 888-825-4716. Drainage channels are designed to be used to provide drainage solutions for surface water on driveways and patios and around garage and conservatory entrances and exits. Heavy Duty 4' Trench / Channel Drains; Skinny 4' Trench / Channel Drains; Grates; Risers; Drain Wells; Seals & Grommets; Basins; Pumps; Rain Drain Boxes; Atrium Grates;9" Extra-Heavy-Duty Drain. Whether you’re looking for replacement cast iron trench grates or a newly installed. Most commonly used with Dura Trench 4″ wide. COMPOSITE D400 DRAIN GRATE: Heavy Duty Drain Grate for Road Site Rainwater Drainage, PLASTIC SHEET MOLDING COMPOSITE: Lighter than Cast Iron Grates and Corrosion Free . Grate Top Loading Classifications Two grate classification systems are shown to assist in grate selection. . (93) Questions & Answers (18) Hover Image to Zoom. Heavy Duty Grate design load of at least 56,200 lbs per foot. 80 :. Thank you for your interest in the 36 in. CO. PDX is available in 7 different interior widths from 6” [152mm] up to 24” [609mm] with depth increments from 0. 95. Since these conditions can range from light-duty forklifts to heavy-duty truck or aircraft traffic, heavy duty gratings. Heavy Duty. Price $221. Add to Cart. Heavy Duty Cast Iron Frame Included. 5 3/4 " 1 1/2 ". Additional Resources. Hubbell’s POLYCAST® 700 Series is the logical trench drain choice for heavy duty applications with constant fork trucks or heavy equipment. longNeenah R-4030 Heavy Duty Sewer Pipe Grate; Neenah R-4040 Light Duty Sewer Pipe Grate; Neenah R-4055 Sewer Pipe Bell; Neenah R-8802 Rectangular Tree Grates;. SMC/GRP Trench Drain with or without slope PRO-PLUS 200C – PRO-PLUS® 200C 8" nom. Dead Level D Trench Drain; BarryCraft Grates More; Light Duty 5300 Series; Standard Trench Drain Grates 1" to 12" Wide; Large Trench Drain Grates 13" to 51" Wide;Shop Amazon for MOSINSBO Cast Iron Drain Grate, 20x20 Outdoor Drain Cover, C250 Class Sewer Grate, Durable Heavy Duty Channel Grate, Black Square Drainage Grate for Concrete Floor (19. catch basin grate to block debris from clogging your drain pipes. Holman PVC Stormwater FInishing Collar W/ Grate 90mm. Load rating 600 lbs. We customise exceptional drain grates!Round heavy duty ductile grate with black paint. Traditional Trench Grate & Frame - Galvanised. Add to cart. Grate Height: 2 inch. From pedestrian to heavy-traffic, channel drain grates are available with load ratings up to class D in a variety of materials including plastic, iron, steel and brass. Adjustable Floor Drain Grates. 9733, Floor Drains Stainless Steel-Carbon Steel, 15" Round Top Heavy Duty Drain with Tractor Grate, built by Jay R. View Airport and Port Catalog. 69” [500mm]. TrenchFormer XHD is more than just an extremely heavy-duty grate. × 60” lg. With Class B and Class D grates in the range, and two size channels to choose from, there is a drainage solution for any project. Allow easy access to cleanout plugs hidden behind walls and floors. This item Polylok Heavy Duty 4ft Trench Drain & Grate - Gray NDS 864GMTL 5-Inch Pro Channel Drain Kit with Metal Grate, 5 in, Gray VEVOR Trench Drain System, Channel Drain with Metal Grate, 5. Neenah R-4030 Heavy Duty Sewer Pipe Grate; Neenah R-4040 Light Duty Sewer Pipe Grate; Neenah R-4055 Sewer Pipe Bell; Neenah R-8802 Rectangular Tree Grates;. The. Josam. Our drain grates are available from the economical bar grating for light duty traffic to the heavy duty GRATE PLATES™ for the more extreme uses. open surface area, 121 GPM flow rate. You can expect heavy-duty welded grating to hold up over time while being subjected to large pressures. 88" / Inside diameter 23. Easily installed and removed with one bolt. Self supporting grate needs no additional support for most water features. Not only are our drainage grates rust-proof, but they are also extremely sturdy and bike-safe due. Framing options are also available. 00 incl VAT. 150mm Medium Duty. Dead Level D Trench Drain; BarryCraft Grates More; Light Duty 5300 Series; Standard Trench Drain Grates 1" to 12" Wide; Large Trench Drain Grates 13" to 51" Wide;. Adjustable Floor Drain Grates. Contact your sales or customer service representative for assistance. 1. Description. Christy® offers a unique locking grade ring to assure permanence and quality of surface grades when streets are re-paved. Drain Cleanout Hole Covers. covers are designed to fit over trench-style drains. I. 7”x11. Broad selection of solutions for drainage management. Rated for NDS class B loads (up to 175 psi) when properly installed-recommended for medium-duty pneumatic tire traffic. 87″ x 2″). Standard Lock and No Lock Trench Drain Replacement Grates in sizes from 2. All Josam; CPS100; View All; NDS. load rating; or heavy duty: max 40,000 lbs. 25". 9 in) 4. $1,096. 29 3/4"W X 18" L X 2 1/2"D. 00. With a width of 6 inches, a length of 24 inches, and a thickness of. Qty 16 – toggle locks secure the grates to the frame (SKU: GLZN4) These driveway drain kits are not light-duty plastic drains from big box stores or other online stores. Other load ratings available. 12-in Wide Heavy Duty Fiberglass Trench Drain Grate $ 398. Ductile irons are governed by ASTM A536. Spray Nozzle & BucketManhole covers, or drain covers, come in a range of sizes and weight-bearing classes. 00 $ 63. Round Cast Iron Grate Drain. Roof Drain Grates. The Polylok Heavy Duty Trench Drain is H-20 wheel load rated when cast in reinforced concrete (as per Polylok Trench Drain H-20 Instruction Diagram). $34. 12 - $1. Fast Shipping!MOSINSBO Outdoor Drain Cover, 12x12 Galvanized Steel Drain Grate for Catch Basin, B125 Class Sewer Grate, Durable Heavy Duty Channel Grate, Sliver Square Drainage Grate (11. £105. STRUCTURE RUGGED: Outdoor Grate Cover with 30+ years of durability, Low Shipping Cost. Products are available in a wide range of bar sizes and spacings to accommodate conditions ranging from smaller forklift to large truck or aircraft. Metal Trench Drain Grates, Outdoor Heavy Duty Channel Drainage Cover for Garage Factory Farm Parking Lot Basement Sewer Ditch Gully Concrete Floor. Choose from ductile iron, galvanised or polypropylene covers for your project. Looking to create a trench drain system with these grates? We have a variety of rails/frames to make the build easier. Choose from our selection of cast iron or ductile iron of 6" to 12" wide. Strength is necessary in any place the grates will be driven over by cars and trucks: there are even extra heavy-duty grates appropriate for airports and shipping docks. Specs and Installation. $19. 6" Wide Zurn Z886HD Heavy Duty Trench Drain Kit E Class Grate. 5-meter long and will adapt to any trench drain application. Grate openings: 46. Round. 00. SKU: 05B24DI. The 15 in. H-20 Load Rated. It has good chemical resistance with similar grating and is a great option for installation in chemical facilities. 888-825-4716. Heavy-duty steel grating is also stronger in the sense that it is strong enough to withstand extreme temperatures. Square. From upfront design consultation, to simplified installation, and performance after your job is done, we’re here to meet all of your trench drain project requirements. Afterward, cross bar selection takes. NDS Dura Slope Galvanized Steel Perforated Channel Grate. Highest UV protection. Dimensions: Catalog No. They are engineered to last. Junction Boxes. Grate Material: Ductile/Cast Iron. 5 cfs (700 gpm) range. Catalog No. These grates are strong enough to handle a high volume of traffic, even from vehicles. Skid resistant surface. I. FREE Returns . Dead Level D Trench Drain; BarryCraft Grates More; Light Duty 5300 Series; Standard Trench Drain Grates 1" to 12" Wide; Large Trench Drain Grates 13" to 51" Wide;Swiftdrain | 6″ wide pre sloped trench drain View Details; 8″ Heavy duty trench drain kit – 10 feet View Details; Swiftdrain 600 | 6″ wide pre sloped View Details; 12″ Pre Cast Concrete with Iron Grates Kit- 10 feet $ 3,200. Choose from our selection of cast iron or ductile iron of 6" to 12" wide. Our catch basin grates are 0. Reliable accessory for plumbing projects. 1 ANSI A112. 1 Light Duty – All grates having safe live load (as calculatedCovertite stormwater drainage grates, like all of our products, are made to meet or exceed Australian Standard AS3996, so you can be assured that which ever grates and frames you select, they will be of high quality and. Extra Heavy Duty CI Grate Slotted for Bolts . Our BoOF (Baked on Oil Finish) process can also be applied to any ductile iron grates offered by Trench Drain Systems. see all Cleanout/Monument Boxes. 7”x15. Chequer Plate Galv: 600 x 600mm; Light Duty Cover & Frame - Locked. Strength is necessary in any place the grates will be driven over by cars and trucks: there are even extra heavy-duty grates appropriate for airports and shipping docks. B125 Class Sewer Grate, Durable Heavy Duty Channel Grate, Black Square Drainage Grate (11. 10" ext SMC/GRP Trench Drain with and without slopeHeavy-duty welded grating is strong enough for extreme load areas, such as parking lots, highways, terminals, airports and heavy-duty industrial zones. Another common type of drain cover on the market is the traditional cast iron drain cover, which may be what you have in your garage. Mesh Covered C. Options are available for slip-resistant surfaces or bolted grates. Reln Storm Drain Slimline Pit with Plastic Grate Black. Heelguard Stainless Steel Driveway Drain & Grate - 140 x 125mm. 12" Zurn Z882 HDPE / Heavy Duty Frame Kits. For light pneumatic tire traffic only. These systems are ideal for loading docks, parking lots, roadways, airports, areas with forklifts or tractor trailers and anywhere where. Neenah R-4030 Heavy Duty Sewer Pipe Grate; Neenah R-4040 Light Duty Sewer Pipe Grate; Neenah R-4055 Sewer Pipe Bell; Neenah R-8802 Rectangular Tree Grates;. Linear Pattern Stainless Steel Shower Grate & Drain - 85 x 20mm. 6ft Slim Channel Kit with Sand Grates and Accessories SKU # 9206SKIT. We manufacture trench drain grate sizes including 4”, 6”, 8″ & 12″ widths. Replacement Trench Drain Grate for: Vulcan Foundry V-7344 among others. S100 Intercept Ductile Iron Grating E 600 . Prevent blockages and flooding with gully grates and frames. Made of UV protected high density polyethylene. 99. $ 390. Outdoor Drainage Grate Storm Iron Duty Trench Driveway Cast Heavy Metal Grates Trough Culvert Steel Drain Cover $1. Specification Sheet for 6269 Grate. Trench Drain. With over 125 years of casting experience, Neenah Foundry Co. 2. 36” wd. This grate conforms to ASTM A48/A48M-03 specifications, Class 30B. Cast iron heavy duty grate. 610-882-3630. Grates & Covers 47 Result(s) Found . Standard trench drain grates from 1 1/2" to 12" wide and covering the wide range of manufacturers. 4. Replacement Grates for all Manufacturers. Discover more about the small businesses partnering. Specification sheet for 6454. Trench & Channel Drains. Commercial Applications. This precast trench drain system comes standard with 0. (3) $152. Shop Now. 3 feet) Price: Call Us. Brasshards Round Floor Grate White 50mm. Brasshards Hexagonal Floor Grate White 80 x 50mm. Will accommodate 140. 8 cu. These grates are rated Heavy Duty. Manufacturer EJ (formerly East Jordan)Cast i Iron trench drain grates can be cast in a variety of grades and each class of iron has several grades. Products are available in a wide range of bar sizes and spacings to accommodate conditions ranging from smaller forklift to large truck or aircraft. These grates are strong enough to handle a high volume of traffic, even from vehicles. This Heavy-Duty SKU# 6235 Ductile Iron Catch Basin Grate is an excellent replacement for any 24″ x 24″ catch basin grate. Many options are available to meet demands for heavy duty to light. 5" Pro Series Light Traffic Channel Grate, Black SKU # 816. is a leading foundry for municipal and industrial cast iron trench grates. Dura Trench is a trench drain manufacturer offering a complete line of heavy duty, commercial trench drain systems. These are Slim Slotted ADA Compliant grates made of Heavy Duty Cast Iron. Description Additional Information. Adjust these grates to fit a range of hole diameters. Offered with a wide selection of 5″ wide trench. 990mm x 990mm Code SPG9L . 6" B Class ADA HDPE Trench Drain Grate Light Gray HDPE - Load Class B - Fits NDS Dura Slope Trench Drain Product Dimensions: 6"W x 24"L x. Other drain grates also exist, though they are designed differently to meet their specific purposes. 21. Linear Pattern Stainless Steel Shower Grate & Drain - 85 x 20mm. 【Heavy Duty Drain Grate】This heavy duty metal drain grate is made of galvanized steel which has high strength. Light Duty 5300 Series; Standard Trench Drain Grates 1" to 12" Wide;. Made to order to suit your lineal drainage needs, our heavy duty grates are perfect for high traffic areas including driveways. 6902M2 Heavy Duty Cast Iron 10" x 24" grate has bottom leveling feet that can be ground for proper height adjustment. PowerDrain. Neenah R-4030 Heavy Duty Sewer Pipe Grate; Neenah R-4040 Light Duty Sewer Pipe Grate; Neenah R-4055 Sewer Pipe Bell; Neenah R-8802 Rectangular Tree Grates;. Additional information. Special Duty (SD) - Safe Live Load Over 10,000 lbs. Neenah R-4030 Heavy Duty Sewer Pipe Grate; Neenah R-4040 Light Duty Sewer Pipe Grate; Neenah R-4055 Sewer Pipe Bell; Neenah R-8802 Rectangular Tree Grates;. 7”)304 or 316 Stainless Steel. Trench Drain Systems can provide trench drain and deck grating for both light-duty and heavy-duty applications. Effective in everything from patios to light vehicular traffic areas, the most popular applications for this channel include swimming pools, spas, and patios. HEAVY DUTY TRENCH Materials: All frames and grates or lids are made in standard gray iron, meeting ASTM-A48 Class 35-B for heavy-duty use. MOSINSBO Outdoor Drain Cover, 9x9 Cast Iron Drain Grate for Catch Basin, B125 Class Sewer Grate, Durable Heavy. Natotela Ductile Iron Driveway Drain Grate-20x20 in. covers are designed to fit over trench-style drains. At the Trench Grate Store, we provide several ADA-compliant galvanized steel grates no matter what application you need. 12" x 12" Atrium Grate. Made of heavy duty steel, the storm drain cover and frame will last a lifetime. Clogged grates can cause roadway ponding and be a real safety hazard. S100 Heelguard Slotted D/I Grate F 900 . ASTM A48 CL35B, H-20. Like all of our grate products, our driveway drains and grates are manufactured from high quality stainless steel (304 or 316. 6" Wide Zurn Z886HD Heavy Duty Trench Drain Kit E Class Grate NEW Zurn Heavy Duty Trench Drain 6 Inch Wide - Ductile Iron Frame and E Class Grate Commercial Grade High Density Polyethylene This Complete Trench Drain Kit Includes: 1 - 80" Long Section. These trench drain systems have heavy duty frames or integrated ductile iron edges for the heaviest commercial and industrial vehicles and hard wheel forklifts. 80" Modular Channl Sections with 20" and 40" Grates. Since that time, our goal has been to provide the best, most customer-focused services, regardless of the project’s size or scope. $ 382. ft. ACO Drain is available in 2″, 4”, 8” and 12” internal widths, and are available with up to 130 ft (40m) of built-in continuous slope. Trench Drain. Buy Topjia Outdoor Drain Cover,Resin Cuttable High Polymer Drain Strainers Grate,Durable Heavy Duty Channel Drainage Grate for Garage Lawn Sewer. Floor Drains. For pneumatic forklift traffic. Drain Cleanout Hole Covers. NOTE: This product may have an extended lead time, please call for availability. Add to cart. I. For Commercial 1 165mm Square Stainless steel metal heavy duty drain cover gully grid grate. USF 6235 Class D Slotted Ductile Iron 24″ X 24″ Catch Basin Grate. Heavy duty frame and grate for industrial applications. (400 kn). With over 75. A B C; 3990-A: 8 x 24: 1 1/2: 6: 3990-B: 10 x 24: 1 1/2: 8: 3990-C: 12 x 24: 1 1/2: 10:. 5" Pro Series Channel Grate, Heavy Traffic SKU # 828. EJ Heavy Duty Hinged Flat Top Yard Gully Grating C250 - 225mm x 225mm. covers are designed to fit over trench-style drains. These durable channels are generally coupled with heavy duty ductile iron grates. McNICHOLS® carries a large selection of Heavy Duty Welded Bar Grating. We appreciate your business and look forward to serving you in the future. Sort by Price (Low - High). C. 14 yrs CN Supplier. 75 x 5 x 5. Configure. Round. Sewer Drain Grate Guards . View Product Heelguard Galvanised Steel Grate Only. NDS Dura Slope Stainless Steel Perforated Channel Grate. 2. Linear Trench Drainage Grates. 5-in Wide Heavy Duty Perforated Galvanized Steel Trench Drain Grate. Look out for maximum point load (weight. . Block grates and manholes to stop liquids from going in, or seal inactive drains to keep odors from leaking out. 99. Channel Drain Black Composite Grate - 500mm ACO Modular 125. 4 out of 5 stars 6. All sizes, styles and open areas available. The pre-sloped commercial trench drain line is offered in 2″ , 4″ , 6″ , 8″ , 10″ , 12″ , 18″ , 24″ , 36″, and 48″ widths. Lg. Each grate weighs 155 lbs. Heavy duty frp plastic grids floor sump pit sewer drain grate $10. Load Class D Grate design load of at least 89,920 lbs per foot. 00. Selecting the grate. Heavy load class grates from class C to Class F. 99 $ 54 . Express Drainage; Shop by Item. Wd. Co. The range comprises modular and durable drainage channels, manufactured from corrosion-resistant polymer concrete. 99 Zurn JP2375-F - Cast Iron Enameled Full Grate for The FD2375 Floor SinkCast Iron Grate Heavy Duty. Floor & Area Drains. wide X 2 ft. Our heavy duty cast iron Duracast grates meet H-20 load rating standards for loads of 326 - 575 psi. 12" x 24" unbolted trench drain grates. Registered Office: Merchant House, Binley Business. In stock. 1 or 2 grates, please contact Customer Service to process your order for cheaper shipping options (Ground option vs. Cast Bronze. Co. 690mm x 690mm Code SPG6L . 4. Bottom “leveling feet” can be ground for proper height adjustment. Add to basket.