S&P Series 411 and 611 Non-Flanged Horizontal Mount Backdraft Dampers
Models 411 and 611 are a non-flanged horizontal mount exhaust backdraft damper. The frame is galvanized steel with aluminum blades. The blades have a felt seal on the leading edge for quiet closing and better protection from the weather. Spring assisted to allow blades to open quickly. Ideal for use in roof curbs, duct work, or wall collars when using a fan or power roof ventilator. Only available for horizontal mount exhaust applications.
FEATURES:
• Frame is Galvanized Steel.
• Easy to motorize. (order 411611 motor pack)
• 2" deep frame.
• Blades are 26 gauge Mill Finish Aluminum
• Felt seal on leading edge of blades for quiet closing and better protection from the weather.
• Nylon bushings and stainless steel pivot pins
• Temperature -40F to 180F
why buy from us?
We're engineers passionate about home ventilation and serious about customer service – so you can count on us for carefully-selected equipment and expert advice to ensure your project is a success from specification to installation.
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