150mm ventilation grille with insect screen, 304 stainless steel, non-return valve, weatherproof grille, Ø150mm ventilation grille

【Improved Ventilation Grille】: This stainless steel ventilation grille features a fine mesh added to the original design, effectively preventing insects and small animals from entering. Suitable for indoor and outdoor use. Ideal for exhaust ducts, pipes, dryers, garages, range hoods, and air vents. 😊【Ventilation Grille】: This stainless steel exhaust grille features movable slats to prevent water from seeping in and a round rear connection to prevent backflow. Suitable for indoor and outdoor use. Ideal for exhaust ducts, pipes, dryers, bathrooms, kitchens, garages, range hoods, and ventilation systems. 😊【Universal Size】: These standard-size 150mm diameter ventilation grilles can be used in 150mm diameter ventilation ducts to cover the duct opening and prevent rainwater from seeping in while ensuring proper ventilation. 😊【Easy Installation】: The entire installation process can be completed in minutes. Simply insert the ventilation grille into the ventilation duct or flexible pipe, then hammer four screws into the wall to complete the installation.