300 Gallon Holding Tank

For larger jobs, check out PolyPortables’ 300-gallon rotationally molded polyethylene holding tank which works well in many applications. It is most often used under on-site office trailers, but has also been used for temporary waste storage in other locations as well.

polyportables 300 gallon holding tank


  • 10″ man-hole installed at the tank’s center
  • Two 3” clean out ports
  • Two 3″ spin weld ports
  • Uni-seal grommets and threaded PVC connector are inserted in each clean out port


300 gallon holding tank



Length2.25 m88.5"
Width1.19 m47"
Height0.46 m18"
Weight81.65 kg180 lbs