RS PRO Steel Air Diffusion Valve Diffusion Valve

Complete your ceiling air supply installation with these air diffusers. Our air diffusion valves are compatible with rigid or flexible ducting, easy to install and are constructed from two component parts that include a diffuser and spigot mount plate.

A fitted gasket forms an airtight seal
With 1/4 turn bayonet fixing for quick removal and an adjustable setting with locknut