Base Container BC450 with primary tank capacity of 450 gal is constructed from crosslink polyethylene or FDA-approved and NSF-certified linear polyethylene. It can hold chemical tote bins for up to 3½ hr, offering partially sloped bottom for near complete draining from top suction. Max load capacity is 4,500 lb. Double-wall rectangular tank has 2-1/2 in. thick mild steel, epoxy-coated grating and 11 in. threaded access cap with gasket.