Moeller Portable Fuel Tanks, Sight Gauge, Seamless, EPA Compliant Constructed from seamless, thick-walled plastic, they are up to 30% tougher than other brands Dimensions: 21.50 in. L x 13.18 in. W x 10.1 in. H, Replacement Pickup: 621002-10, Replacement Cap: 305994-10, Gauge: 621001-10 Portable tanks are used to convey fuel directly to the engine, not intended for permanent installation Prevent the escape of hydrocarbons at the molecular level which makes them compliant with EPA emissions and permeation requirements