Tjernlund EF-12 12-Inch In-Line Duct Booster Fan

The Tjernlund EF-12 is a heavy-duty duct booster fan designed to increase airflow in both residential and commercial HVAC systems. This 12-inch fan can be installed in branch ducts serving individual rooms or in main trunk line ducts to effectively solve air delivery and ventilation challenges.

Key Features:

• Delivers 875 CFM at 0.000-inch static pressure, with variable performance of 800/700/600 CFM depending on duct conditions
• Equipped with a 3.3 frame motor and durable metal fan blade for reliable performance
• Constructed with heavy-gauge 24-gauge galvanized steel housing, stronger than standard ductwork fittings
• Operates on 120V AC power with 1500 RPM motor speed
• Rated for air temperatures up to 150°F
• Crimped and beaded edges for smooth integration with existing metal or flexible ductwork
• Compact dimensions: 15-5/8 inches height x 12 inches diameter

This versatile duct booster fan solves air delivery problems by boosting airflow into hard-to-heat or cool rooms, and serves as an efficient solution for exhausting unwanted heat, humidity, odors, or other airborne contaminants. The unit includes an external junction box for simplified electrical installation and can be mounted horizontally or vertically depending on application requirements.