Black Cowled Grille 100mm / 4" Extractor Fan Cowl Grille with Damper Ducting
Black Cowled Extractor Fan Grille with Damper 100mm / 4". Black cowled grille. For us with 100mm / 4" ducting. Cowl with damper / shutter to prevent back draft and anything crawling or flying in. 100mm / 4" spigot.