Verplass 100mm Round Plastic Ceiling Valve is perfect for use with an in-line fans where there is more than one extract point. The Ceiling Valve has a fully adjustable centre disc and may be used for internal use within duct.
100mm 4" duct connection size
Adjustable ceiling mounted air valve grille finished in brilliant white
Preferred choice for MVHR heat recovery systems
Disc is mounted on a central threaded core for adjustment that can be locked to prevent tampering