NDS DS-221 - Dura Slope Galvanized Steel GrateNDS Dura Slope is a 6 5 8" wide, 48" long trench drain system with a built in slope of 0. 7%. "N" sections are non sloped and used to extend the length of the system. Each channel section is molded of gray structural foam polyethylene with UV inhibitors 4" inside diameter with a 2" radius bottom. LeveLoc re bar supports with integral protruding knob levels channel and grips re bar. ProFit locking system locks grate to integral frame and supports
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