Polylok offers an extensive line of grates. 24 Polylok HD Pipe Grate PN: 3008-G24 15 Polylok HD Pipe Grate PN: 300415-GR 12 Polylok Riser & D-Box Grate PN: 3017-GE Polylok Heavy Duty Pipe grates shown on corrugated pipe. 20 Polylok HD Riser & D-Box Grate PN: 3017-G20 About this item 24 round grate for 24 corrugated or ribbed pipe, Polylok 24 risers & d-boxes Skid resistant surface Highest UV protection Outside diameter 25.88 / Inside diameter 23.25 Load rating 1,500 lbs. View more Open End Cap for Polylok Heavy Duty Channel & Trench Drain - French 3008-G24 - The Polylok 24'' Heavy Duty Grate Lid Fits 24'' Inside Diameter Single Wall And Double Wall Corrugated Pipe. This Cover Is Perfect Heavy Duty Corrugated Pipe Grate Driveway Grates Polylok 12" Heavy Duty Corrugated Pipe Cover - 3004-C - Free Shipping Drainage Grate 24'' Riser 24” round grate for 24” corrugated or ribbed pipe, Polylok 24” risers & d-boxes , Skid resistant surface , Highest UV protection , Outside diameter 25., 88 / Inside diameter 23., 25 , Load rating 1,500 lbs. Each grate is manufactured with the highest UV protection available.
