DESIGNED FOR THE WIDELY USED 275-GALLON OBROUND TANK, THE POLY-TANK CONTAINMENT UNIT 275 WILL HELP PROTECT AGAINST HAZARDOUS AND COSTLY SPILLS. IT BOASTS A LARGE 275 GALLON SUMP WHICH SAVES SPACE AN PROVIDES EASY ACCESS TO THE TANK AND PUMPS. THE POLY-TANK CONTAINMENT UNIT 275 PREVENTS HARMFUL OIL SPILLS FROM CONTAMINATING YOUR YARD. LIMITED 1 YEAR WARRANTY.