Designed for the safe ventilation of bathrooms, toilets and shower rooms, the SF 100 (100mm 4\") is 85m³/hr 23 litres per second. Available with or without a timer, the SF100 fan kits are supplied complete with a fan unit, one length of PVC flexible ducting, one internal (white) and one external wall grille, fixing screws, plugs and straps to secure the duct to the grilles. The units are all manufactured using high impact ABS thermoplastics for strength and durability, aesthetics and easy cleaning. Power is provided by a single phase induction motor with pre-oiled bearings for a long, maintenance-free life. Designed to comply with the Building Regulations on Ventilation (F1).