We offer 14 different sizes of septic tanks. Depending on the location of your septic tank and how many people are in your household, we have a septic tank to suit to your requirements. All horizontal tanks are engineered to a maximum depth of 900mm.  Our current septic tank specifications are shown in the following table:

Capacity (Litres) Code Type Weight (Kg) Length (mm) Diameter (mm) Inlet (mm) Outlet (mm)
Below 3000 litres tanks (1 option)
1620 SEP01620 Horizontal 1875 1700 1420 1150 1100
3000 litre tanks (3 options)
3000 SEP0300050 50mm wall 2000 2286 1525 1295 1245
3000 SEP0300060 60mm wall 2300 2286 1545 1305 1255
3250 SEP03250 Horizontal 2140 2300 1545 1335 1265
4300 litre tanks (1 option)
4300/Hold SEP04300 Horizontal 2550 2300 1770 1550 1490
5000 litre tanks (4 options)
5000/Hold SEP05000 Horizontal 3250 2340 1950 1630 1580
5000 SEP05000VD Vertical 5400* High 2240* 1930 2070 2020
5000 SEP05000 Vertical 4600* High 2240* 1930 2070 2020
5000 SEP05000VH Vertical 4500* High 2240* 1930 2070  2020
8000 litre tanks (3 options)
8000 SEP08000 Vertical 6600* High 2460* 2440 2250 2200
8000 SEP08000H Vertical 6500* High 2460* 2440 2250 2200
8000 SEP08000D Vertical 7700* High 2460* 2440 2250 2200
12,000 litre tanks (3 options)
12000 SEP12000 Vertical 8420* High 2440* 2870 2250 2200
12000 SEP12000D Vertical 9840* High 2440* 2870 2250 2200
12000 SEP12000H Vertical 7300* High 2440* 2870 2250 2200
20,000 litre tanks (3 options)
20000 SEP20000 Vertical 12510* High 2740* 3450 2550 2500
20000 SEP20000D Vertical 14620* High 2740* 3450 2550 2500
20000 SEP20000H Vertical 10600* High 2740* 3450 2550 2500
* Height and weight depend on lid thickness.