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4″ Internal Width Grates (37) Load Class A: EN 1433 – 3,372 lbs., 15kN, 70 PSI (7) Load Class B: EN 1433 – 28,100 lbs., 125kN, 580 PSI (2) Load Class C: EN 1433 – 56,200 LBS., 250kN, 1160 PSI (16) Load Class E: EN 1433 – 134,800 LBS., 600kN, 2785 PSI (8) Load Class F: EN 1433 – 202, 320 lbs., 900kN, 4,177 PSI (4) 8″ Internal Width Grates (25) Load Class A: EN 1433 – 3,372 lbs., 15kN, 70 PSI (2) Load Class B: EN 1433 – 28,100 lbs., 125kN, 580 PSI (2) Load Class C: EN 1433 – 56,200 LBS., 250kN, 1160 PSI (11) Load Class E: EN 1433 – 134,800 LBS., 600kN, 2785 PSI (6) Load Class F: EN 1433 – 202, 320 lbs., 900kN, 4,177 PSI (4) 12″ Internal Width Grates (14) Load Class C: EN 1433 – 56,200 LBS., 250kN, 1160 PSI (5) Load Class E: EN 1433 – 134,800 LBS., 600kN, 2785 PSI (6) Load Class F: EN 1433 – 202, 320 lbs., 900kN, 4,177 PSI (3) Hydromax Siphonic Roof Drains (9) Interceptors (94) Acid Neutralization (1) HDPE Interceptors (35) LIL-MAX (10) BIG-MAX (9) SUPER-MAX (16) Grease Interceptors (23) 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