UltraTech 9227 Ultra-Drain Trash and Debris Guard, 48" Length x 36" Width x 18" Height Keep sediment and other pollutants from entering the water system with ultra-drain guard catch basin inserts Exceeds 80 percent sediment removal efficiency Helps comply with NPDES, 40 CFR 122.26 (1999) when used as best management practice in storm water pollution prevention plans Designed for practical use in industrial facilities, construction sites, parking lots, "drive-up" retail facilities Measures 48-inches length by 36-inches width by 18-inches height