All 4" Width Grates Home » Products » Trench Drains » Trench Drain Grates » 4" Width Grates All 4″ Grate Option Specification Sheets 4" Width Grates Subcategories Load Class A: EN 1433 - 3,372 lbs., 15kN, 70 PSI Load Class B: EN 1433 - 28,100 lbs., 125kN, 580 PSI Load Class C: EN 1433 - 56,200 LBS., 250kN, 1160 PSI Load Class E: EN 1433 - 134,800 LBS., 600kN, 2785 PSI Load Class F: EN 1433 - 202, 320 lbs., 900kN, 4,177 PSI
