A ventilated louvre is a weatherproof vent with a frame size of 40mm x 40mm. These louvres have a 16mm fixed blade with a 10mm weather groove upstand to prevent rain from penetrating inside. It comes with insect mesh pre-mounted. These are typically used where a vent or duct is required on the side of a building. Our louvres are proudly New Zealand made and available in three different high quality timber species (Red Cedar, Yellow Cedar & Pine) finished to paint quality. We offer a range of sizes, but can custom build any item to match your requirements. Blade size: 16mm Blade: Fixed Frame size: 40mm x 40mm