KAIR GRAVITY GRILLE 100MM ROUND SPIGOT - BEIGE Beige plastic ducting air outlet with gravity shutters 4 inch / 100mm round male spigot on the back of the grille fits inside Kair 100mm Round Female Duct Pipe (Part: "DUCVKC250") or 102mm flexible hose (Part: "DUCP002/102/35"). Non-return shutter flaps close automatically when not in use. Stops unpleasant odours, noises, or draughts flowing back through your duct. Gravity flap - no need for springs that break. Wipe-clean durable design for indoor or outdoor use. Suitable to use in compliance with Part F Building Regulations. Airflow performance independently tested by BSRIA or BRE. Free Air: 7200mm2. Static Pressure Drop in Pascals: 15 l/s = 10.94 Pa - 30 l/s = 18.59 Pa - 60 l/s = 24.21 Pa. Built to last out of high-quality Polystyrene/Polypropylene plastic material. Easy to install and durable, just push-fit duct and fittings together.  For permanent fixings, seal joints with silicone sealant or tape. Max / Min Temperature: +60c / -15c. Perfectly suited for ducting your bathroom or kitchen extractor fan, hydroponics, in-line extract fans, tumble dryer, or cooker hood. This item can be used as a part of a long ductwork run for a variety of purposes including whole house ventilation, passive stack vent, positive input ventilation, air conditioning, HVAC, and Heat Recovery systems. Kair SYS-100 plastic rigid ducting is perfect for DIY and Trade use and provides superior airflow performance and durability versus flexible duct. Suitable to use in compliance with Part F Building Regulations. Genuine Kair Product & covered by the Kair 100% Satisfaction Guarantee. Alternative Colours: The Kair range of gravity grilles are available in 5 colours: White (Part: "DUCVKC243") Terracotta (Part: "DUCVKC243-TC") Brown (Part: "DUCVKC243-BR") Beige (Part: "DUCVKC243-BG") Black (Part: "DUCVKC243-BK")  Alternative Materials: Stainless steel versions are also available in 100mm, 125mm, and 150mm versions. Click here to view the Kair Stainless Steel Gravity Grille range. Alternative Sizes: Versions with 110mm x 54mm rectangular spigots are also available. Click here to view the full range of Kair Plastic Gravity Grilles. Looking for compatible products? Compatible with the extensive Kair SYS-100 range of fittings, outlets, and grilles.  Click here to view the full range of Kair 100mm Round / 110mm x 54mm Rectangular Ducting Products.