Designed for the widely used 275-gal. obround tank, this containment unit helps prevent harmful and costly oil spills from contaminating the ground. The Poly-Tank Containment Unit/275™ features a large, 275-gal. sump that saves space and provides easy access to the tank and pumps. Optional bulkhead fittings make pumping and draining simple. Optional poly tarp keeps rainwater and debris out of the sump. Meets EPA 40, SPCC and NPDES regulations. Tank not included.