COWL WALL VENT 4" Square Air Duct Hole Grill Grille Extractor Fan Cover Outside
4" sQUARE HOODED cOWL aIR vENT cOVER. Hooded Cowl With Internal Backdraught Shutter. Distance Between Screw Holes: 100mm. Can Be Fitted To Round Ducting Or Flat Channel Ducting. we strongly advise that you confirm reciept of your item.