Kair Brown Cowled Outlet Grille 155mm External Dimension Wall Vent with 100mm - 4 inch Round Rear Spigot and Wind Baffle Backdraught Shutter

KAIR COWLED WALL OUTLET 100MM ROUND SPIGOTKair cowled vent with damper flap & 100mm round spigot. Designed for use with 100mm / 4 inch round ducting. Cowl protects against driving rain and gusts of wind entering your property via the duct run. Damper flap can be closed to help reduce unpleasant odours, noises, or draughts flowing back through your duct. 4 inch / 100mm round male spigot on the back of the grille fits inside most comparable size pipes/hoses such as Kair 100mm Round Female Duct Pipe (Part: DUCVKC250) or 102mm flexible hose (Part: DUCP002/102/35). 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 = 4.72 Pa - 30 l/s = 17.18 Pa - 60 l/s = 62.48 Pa. Built to last out of high-quality Polystyrene/Polypropylene plastic material. Max / Min Temperature: +60c / -15c.Easy to install and durable, just pu