• The OPTI-A112 attic ventilator is designed for sloping roofs
• Its 1 fin design with 12" opening provides optimal attic ventilation
• Openings molded into the structure of the ventilator eliminate the need for long-term maintenance and prevent birds and rodents from entering the interior
• Anti-gust deflectors prevent weather infiltration regardless of wind direction
• This ventilator gives you the advantage of a cooler attic in summer and a drier one in winter
• It prolongs structural integrity, optimizes indoor comfort and saves energy
• This static fan provides superior suction and, with the help of the wind, produces a chimney effect
• Air is exchanged continuously at a rate of 134 cfm for a surface area of up to 400 sq. ft
• Automatic slope adjustment from 2/12 to 18/12
• Facilitates evacuation of heat and condensation
• Helps preserve the integrity of attic materials
• Easy to install, as only one person is required for installation
• Screws included
• CSA-certified
• Anti-gust deflector
• Quiet and maintenance-free
• Color: black