SPARES2GO Universal Exterior Wall Venting Kit Tumble Dryers (White, 4" / 102mm) Fits Models: Tumble Dryers with a 4" / 100mm Duct Spigot. Whilst the majority of Tumble Dryers have a 100mm spigot, a reducer will be required on units with a 125mm spigot. Contains All Parts Necessary For Installation: External gravity grill with 3 flaps (White, 155mm x 155mm), Flexible pipe duct hose (102mm Diameter x 1000mm Length), Threaded hose adapter x 2, Wall Plate, 8 screws + 8 Plugs Reduces damaging condensation & features non-return flaps to eliminate outdoor drafts. Premium quality tumble dryer accessory.