Retentieslang 25: vertraagd afvoeren regenwater

The retentionslang is designed to slow down the drainage of rainwater, which may be required by some municipalities for water retention with specific drainage times. It is installed in a rainwater tank or pit and helps maintain a consistent flow rate.

• The description claims that the retentionslang can slow down the drainage of rainwater to meet water retention requirements with specific drainage times.