Black Gravity Vent Extractor Fan Ducting Wall Flap Grille Ventilation 4" 100mm
Black Extractor Fan Ducting Wall Gravity Flap Grille Ventilation 4" 100mm. 100mm / 4" Gravity Grille - Black For use with 100mm / 4" ducting systems. Duct Size 100mm. Front Width 155mm. Front Height 155mm.