KAIR WHITE POWDER-COATED METAL ADJUSTABLE CEILING AIR SUPPLY VALVE High-quality white powder-coated metal adjustable ceiling air extract vent. The air flow is adjusted by rotating the control disc. Male spigot will fit inside Kair or other ducting 100mm Round Pipe or 102mm Flexible Hose. Discreet modern design which is suitable for flush fitting against ceilings and walls. Designed To Supply Air. If you are looking to extract air we recommend using the Kair extract valve. Aesthetically pleasing wipe-clean design. Suitable for internal use in compliance with Part F Building Regulations. If you are looking for a Fire Rated Supply Valve search for the Kair Fire Rated Supply Valves on Amazon. Mounting ring manufactured in 0.6mm thick galvanised steel with four 3mm fixing holes. The valve body is supplied with a cellular plastic gasket to form an air-tight seal. The air flow is adjusted by rotating the control disc and locking with a lock nut when set. Looking for another size or material? Kair extract and supply valves are available in 100mm, 125mm, 150mm, and 200mm sizes. Kair products are made in the UK and are compatible with the extensive range of fittings, outlets, and grilles in multiple sizes to offer your a complete solution for all of your ventilation needs. Please do not hesitate and as us any questions you may have.