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Type-first brief with neon hairline frame — description and returns filed under the channel.
intermittent ventilation
and the system can then be sealed
S2 self-fluxing silver copper – phosphorus alloy brazing rods
2 or Outside the unit comes pre-assembled and is easy to install in both new build or when replacing an existing fan
The Zehnder CK300 rigid twin duct
Zehnder Fire Rated Airbrick and Ducting Kit for Circular Ducting Duct Size:125mm Dia intermittent ventilationFire Rated Airbrick and Ducting Kits: The firerated airbrick and duct transition kits are designed for integration into external wall constructions during the build phase, in accordance with Building Regulations Approved Document B (Fire Safety). The airbrick incorporates a pictureframe surround to facilitate accurate positioning and straightforward installation. A mechanically fixed mounting system is employed to provide a secure, stable, and durable