Straight extension for yard drains Perfekt (HL615-616) HL620
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TECHNICAL DATA
Sales unit dimensions and weight: 1 pcs
Straight extension for yard drains Perfekt (HL615-616) HL620
Yard inlet extension – flexibility in installation
The straight extension, designed for Perfekt yard inlets (HL615-616), is an element that allows adjusting the inlet height to specific mounting conditions. Its design allows extension at the base height, both with and without a grate or extension, ensuring optimal adaptation to the roof slab layer arrangement.
Compatibility and application
This extension is compatible with a wide range of HL drainage system elements:
- HL615 and HL616 series inlets
- HL618, HL618H and HL620 extensions
- HL190 drainage ring
This makes it a universal solution that can be used in various roof configurations. It allows precise adjustment of the inlet height to thermal insulation and other layers, which translates into the correct operation of the entire drainage system.
Construction and characteristics
The height of the extension is 100 mm. Made of high-quality materials, it ensures durability and resistance to weather conditions. The ability to connect with additional elements allows for even greater flexibility in adapting to individual project needs. The weight of the extension is 0.27 kg.

