Discover our soon to be released space saving rainwater tank range, with even more capacity.

Thintanks™ 4000 litre slimline unit caters to residences with more space and a greater demand for rainwater storage, while still maintaining a fence-like appearance to aesthetically enhance the view of surrounding areas.

With an overall width of 750mm and a contemporary, sleek finish, the 4000L poly slimline rainwater tank is easy to install and provides little disruption to the aesthetics of your home and property.

Outstanding features of the 4000L Thintanks™ include:

  • Made of a solid one piece construct for maximum strength
  • Vertical and horizontal ribs with the cross connectors - Additional support to contain expansion when filled with rainwater
  • Fitted with 2 brass 25mm outlets at the bottom to allow easy interlinking of tanks - Maximise required water collection capabilities
  • Australian designed South African manufactured from 100% U.V stabilised, food grade polyethylene resin

4000 Litre Slimline Water Tank Colours


View our gallery

Warranty                         

  • Thintanks™ warrants its rainwater tanks by a pro rata warranty for 10 years from the original date of purchase. This warranty covers the original purchaser only and is not transferable.
  • Subject to discretion, Thintanks™ will repair or replace the tank if it is affected by a defect or fault caused by the manufacturing process or materials.
  • Fading or colour change, damage caused by accidents or misuse, do-it-yourself repairs or incorrect installation, and any subsequent costs (including freight of replacement tank) are not covered by this warranty.