Behlen Mfg 328 Poly Round End Tank (approx. 300 gal.)Description 52112187 Poly Round End Tanks are made with a durable, seamless design that helps resists breakage. All round end tanks have an extra heavy duty, molded rim and an extra deep sidewall rib design for additional strength. A Heavy Duty, molded in aluminum drain fitting and 1 1 4poly drain plug ensure a long life. All Poly tanks made with poly, tested to 20F, corrosion free, impact resistant and recyclable. Nominal Size (W H L) 3 X 2 X 8