Description: 100/125/150mm Stainless Steel Square Wall Air Vent Ducting Grille Cover. Specification: Color:Silver; Material:304 Stainless Steel; Function:Rainproof, insect-proof, dustproof; Scope of application: Installed in the pipe exhaust vent position in external wall; Dimension: • Φ100mm/4" hose fitting; Over all:184×184mm; • Φ125mm/5" hose fitting; Over all:184×184mm; • Φ150mm/6" hose fitting; Over all:184×184mm. Features: 304 stainless steel material. Scratch resistant, corrosion-resistant and durable. Arc Dome Design. Effectively prevents outdoor air from flowing back. 45 ° Inclined Louver. To prevent rainwater from instilling. Insect-proof filter. Prevents the entry of sundries such as mosquitoes and dust. Snap Ring Design. Acts to strengthen and prevent falling off. -Applied to the circular pipe/ducting hose diameter of 100/125/150mm. -Ideal for all tumble dryer vent pipes/hoses.Perfect for ventilation systems, gas; electric dryers;cooker hood extractors, as well as a wide variety of industrial uses. Package Included: 1 x Wall Air Vent Ducting Cover