Advanced Drainage Systems, Inc. (ADS) 15 in. x 20 ft. Hi-Q Poly Double Wall Corrugated Culvert has a smooth interior wall and corrugated exterior wall, offering exceptional hydraulics and strength. Built using application-specific high-density polyethylene, providing superior corrosion and abrasion resistance making it an excellent alternative to reinforced concrete (RCP) and corrugated metal pipe (CMP).
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