Below Ground

Underground tanks can be made for:
  • Potable Water Storage Tanks
  • Sewage Holding Tanks
  • Aerated Sewage Holding Tanks
  • Septic Tanks, single & dual chamber
  • Water/Oil Separator Tanks (WOS)

    If you have a project that needs tanks, we have the tank you need.

5' Diameter underground fiberglass tanks

Model No.sort icon Total Capacity Imp Gal Imp. Gal US Gal Ltr's MOH No. Diameter " Width " Length " Height " Diameter Lid Diameter Top Diameter Bottom
FRP3000-5H 3000 296
FRP4000-5H 4000 395
FRP5000-5H 5000 493
FRP6000-5H 6000 592

6' Diameter underground fiberglass tanks

Model No.sort icon Total Capacity Imp Gal Imp. Gal US Gal Ltr's MOH No. Diameter " Width " Length " Height " Diameter Lid Diameter Top Diameter Bottom
FRP3000-6H 3000 216
FRP4000-6H 4000 276
FRP5000-6H 5000 348
FRP6000-6H 6000 420
FRP7000-6H 7000 492
FRP8000-6H 8000 552
FRP9000-6H 9000 624

7' Diameter underground fiberglass tanks

Model No.sort icon Total Capacity Imp Gal Imp. Gal US Gal Ltr's MOH No. Diameter " Width " Length " Height " Diameter Lid Diameter Top Diameter Bottom
FRP4000-7H 4000 204
FRP5000-7H 5000 264
FRP6000-7H 6000 324
FRP7000-7H 7000 384
FRP8000-7H 8000 444
FRP9000-7H 9000 504
FRP10000-7H 10000 564

8' Diameter underground fiberglass tanks

Model No.sort icon Total Capacity Imp Gal Imp. Gal US Gal Ltr's MOH No. Diameter " Width " Length " Height " Diameter Lid Diameter Top Diameter Bottom
FRP5000-8H 5000 204
FRP6000-8H 6000 264
FRP7000-8H 7000 312
FRP8000-8H 8000 360
FRP9000-8H 9000 408
FRP10000-8H 10000 456
FRP12000-8H 12000 552
FRP15000-8H 15000 588

10' Diameter underground fiberglass tanks

Model No.sort icon Total Capacity Imp Gal Imp. Gal US Gal Ltr's MOH No. Diameter " Width " Length " Height " Diameter Lid Diameter Top Diameter Bottom
FRP7000-10H 7000 186
FRP8000-10H 8000 210
FRP9000-10H 9000 234
FRP10000-10H 10000 252
FRP11000-10H 11000 280.8
FRP12000-10H 12000 306
FRP13000-10H 13000 330
FRP14000-10H 14000 355.2
FRP15000-10H 15000 379.2
FRP16000-10H 16000 404.4
FRP18000-10H 18000 452.4
FRP20000-10H 20000 501.6
FRP22000-10H 22000 550.8
FRP26000-10H 26000 655.2
FRP30000-10H 30000 746.4
FRP34000-10H 34000 856.8