Concealed fixing screws. Removable blades for easy installation and cleaning. Gravity-operated design saves energy by reducing drafts.
4 inch Diameter - External Plastic Gravity Grille with Spigot Intake Wall White
External Ventilation Cowled Grille with Damper 100mm/4"
Outside Air Vent Cover Ventilation External Wall Square Gravity Grille White
Vents 6 inch Black External Gravity Grille Air Vent Cover with Removable Blades
