Spares2go Stainless Steel Cowled External Extractor Wall Vent Outlet with Cushioned Non Return Flap (125mm, 5") Specifications: 125mm (5") diameter - circular pipe / hose fitting, overall outer measurements: 180mm X 180mm (7" Sq), stainless steel This stylish steel wall extractor hooded vent outlet has an unobtrusive profile, a cushioned low noise flap and a weather seal to prevent unwanted leaks and drafts. Ideal for all tumble dryer vent pipes / hoses, bathroom vents & extractors, air conditioning units, kitchen fans & vents, all home wall vents, heat transfer and ventilation systems, gas & electric dryers, cooker hood extractors, as well as a wide variety of industrial uses.