The extension allows easy leveling of the inspection opening height according to the tank seating depth. You get convenient access to the tank even after final landscaping work.
High-quality plastic resists mechanical loads, UV radiation, and extreme temperatures. Horizontal ribbing increases stability and helps maintain shape even when backfilled with soil.
The extension is mounted to the tank using screws and, thanks to the included seal, helps create a reliable watertight connection. Prepared areas on the side walls make it easy to drill openings for DN100/110 inlet piping as required by the installation.
The Unground extension RUE600 is used to increase the height of the inspection shaft on underground rainwater tanks. It is ideal wherever you need to match the final height to the surrounding terrain while maintaining easy access to the tank for inspection or maintenance.
The design is made of high-quality, high-strength plastic with excellent resistance to mechanical loads, UV radiation, and extreme temperatures. Reinforcement via horizontal ribbing ensures stability and a long service life even after backfilling with soil.
Main benefits and uses:
