Polyethylene construction for excellent chemical resistance, the 1646 features a spill capacity of 66 gallons and gratings with 1.75" square openings which remove easily for cleaning. Forkliftable design with a 3/4" drain plug. Compatible with Eagle model1689 ramp for easy loading and unloading drums. Meets EPA requirements for secondary spill containment of hazardous materials (40 CFR 264.175).