Grilles, Diffusers & Cowls

The extraction grilles here are sorted into internal and external although some are suitable for both. Diffusers supply air and the grilles normally extract. Most have a connection on the back for ducting but some require a plenum box. The roof cowls section also contains flashings etc for fitting.
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Reviews
Duct Mounted Inline Filter - EU4
Duct Mounted Inline Filter - EU4
£ 28.50

Well made and robust, but it was not use for my application ...