BSource 1 Drainage Trench & Driveway Channel Drain with Galvanized Steel Grate ReviewbP PP Source 1 Drainage Trench & Driveway Channel Drain with Galvanized Steel Grate PSnap-In galvanized steel grates are removeable for ease of maintenancePIntegral bottom outlet accommodates 3" and 4" Pipe.PChannel is interlocking. Optional End-Outlet & End-Cap simplifies installPDimensions: 5.12" H x 4.53" W x 39.5" DPRated For 5 Tons or 10,000 LBS.