NDS 243 2' Speed-D Channel Drain Grate, Black Designed for use with nds speed-d channel drain for the purpose of outdoor drainage Ideal for driveways, large decks, residential pools, concrete and paver patios, spas and tennis courts Chemically resistant, rust proof and maintenance free Channel grates are removable for easy clean-out and replacement Channel grates may be held in Place with nds screws or hold down clips