Adjustable-Diameter Pipe Penetration Prefab

Scope of Application

This adjustable-diameter prefab is available in multiple specifications such as D60-D120 and D140-D200. The wall height at its maximum diameter complies with the national standard requiring a 250 mm flashing height, allowing direct application to pipes of corresponding sizes.

Technical Advantages

• The product is manufactured to ensure a 250 mm effective flashing height at the maximum diameter, meeting national standards

• The tiered structure allows for straightforward cutting, enabling on-site workers to quickly create an opening that matches the pipe diameter exactly

• Factory-molded as a single piece without seams, eliminating the risk of post-installation cracking caused by improper lap joint treatment