HomeAll ProductsSeptic TanksSeptic TanksSize*280 gallon500 gallon1000 gallon1200 gallon1500 gallonOur septic tanks are poured at 3,500 psi and reinforced with strux fibers and rebar for maximum strength. Additional risers and tar are available for an extra cost.Size Info280 gallon pump tank:3 ft wide x 3 ft long x 54 in tallBottom of tank to bottom of inlet: 46”weighs ~1,900 lbs500 gallon septic tank:55 in wide x 48 in long x 63 in tallBottom of tank to bottom of inlet: 51 inBottom of tank to bottom of outlet: 49.75 inweighs ~3,800 lbs1000 gallon septic tank:56 in wide x 8 ft longweighs ~6,900 lbsbottom of tank to bottom of inlet: 53.5 inbottom of tank to bottom of outlet: 50.5 inmade with 2 plastic grade risers on the lid1500 gallon septic tank65 in wide x 138 in long x 65 in tallbottom of tank to bottom of inlet: 54.5 inbottom of tank to bottom of outlet: 51.5 inweighs ~9,100 lbs