Air vent made of 304 stainless steel, thickened, not easy to deform and not rust. 100mm hemispherical hood design, windproof and rainproof, very easy to install and use, compatible with all 4 inch diameter ducts. This elegant steel wall extractor outlet port features a fine mesh to prevent insects from entering and a weather seal to prevent leaks and unwanted drafts. The interior design is in the shape of a grid and is angled at 45 to prevent rainwater from entering the pipeline. Ideal for all bathroom fans and extractors, kitchen fans and fans, range hood extractors, as well as for a wide variety of industrial uses. Color: 1 Pcs Features: Material: 304 stainless steel Diameter of circular pipe / pipe fitting: 100mm (4 ") Weight: 110g Product size: 14 x 9x 4 cm Products included: 1pc / 2pcs x Stainless steel ventilation grille Ideal use for All tumble dryer ventilation pipes Bathroom Pipes, Vents & Extractors Air conditioning units Kitchen Fans & Vents All wall vents Heat transfer and ventilation systems Gas and Electric Dryers Extractor hoods Wide variety of industrial uses