Steel Lids are used where the Underground Tank manhole will be under concrete.
- Standard steel lid is Class B, so suitable for residential driveways and foot paths.
- Normally used in conjunction with the Adjustable Riser

About Promax
Promax water tanks are built tough for New Zealand conditions, combining strength, durability, and long-lasting performance. The premium corrugated ENDURO range delivers maximum reliability over many years, while the XPRESS range provides the same trusted Promax quality at a more affordable price point.
Available in a wide range of sizes, shapes, and colours, Promax tanks are designed to blend into your property and meet any water storage need – from residential rainwater harvesting to commercial or agricultural use. With options for both above-ground and underground installation, there’s a Promax tank for every project.
Shop the full Promax range at Turfrey – your trusted supplier of water storage solutions in New Zealand.
View all Products