Preserve property from water damage with an elegant grate that complements its surroundings. The Dura Slope® Channel Drain Grate with stunning diamond design drains water while blocking leaves and debris from entering and potentially clogging the pipeline. Adds a beautiful touch to driveways, pools, walkways, and other hardscapes. The decorative grate with diamond pattern has an open surface area of 9.55 sq. in. per linear ft. and flow rate of 29.21 GPM per linear ft. Rated for NDS Class C Loads (up to 325 PSI) when properly installed; rated for NDS Class D loads (up to 575 PSI) and H-20 rated when properly installed with the Ductile Iron Frame (DS-200H); ADA compliant and heel-proof. Made of raw iron, the grates will rust over time forming a protective iron-oxide patina that begins red-orange and ages to a deep, rich brown.