80/100mm stainless steel ventilation grille round exhaust grille with flange

Features: Stainless steel ventilation grilles. Installed in the outside wall prevent the pest in the room through stainless steel net. Keep indoor and outdoor air circulation. Installation methods: 1. Bore between inner wall and outer wall. 2. Put this product into the round hole on the outside wall for more solid can be attached with glue or cement. 3. Within the wall can be fixed ventilation duct (this product is not suitable for indoor installation choose the new outlet: Stainless steel spherical outlet (shallow mouth) Specifications: Type: Grille Material: stainless steel Quantity: 1pc Color: silver Form: circle Panel Diameter: 14.2cm/5.6 (80mm Type) Diameter: 100mm/3.9 inch 77mm/3.1 inch Package: 1*ventilation grille