• The Optimum roof exhaust is designed for sloped roofs of 2/12 and more
• Its design prevents the interior hatch from freezing allowing optimal air evacuation all year
• The interior must be insulated to prevent any risk of condensation
• This valve picks up stale air from appliances heading outwards such as dryers, bathroom fans or stove hoods
• The mesh is made from the same galvanized steel and the structure blocks the intrusion of birds or rodents inwards with minimal maintenance
• The front deflector prevents the infiltration of inclement weather that could clog the inner hatch
• Designed to avoid infiltration
• In compliance with CSA
• Color: brown
• Diameter: 4"