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

model description usually ships price QTY
411008 S&P 8" X 8" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $24.60
411009 S&P 9" X 9" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $26.10
411010 S&P 10" X 10" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $26.10
411011 S&P 11" X 11" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $26.80
411012 S&P 12" X 12" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $26.80
411014 S&P 14" X 14" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $34.70
411016 S&P 16" X 16" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $35.50
411018 S&P 18" X 18" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $38.40
411019 S&P 19" X 19" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $42.00
411020 S&P 20" X 20" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $47.80
411022 S&P 22" X 22" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $55.00
411024 S&P 24" X 24" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $61.50
411026 S&P 26" X 26" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $70.90
411028 S&P 28" X 28" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $72.40
411030 S&P 30" X 30" series 411 automatic exhaust damper. Max velocity of 2000 FPM. 1-2 Days $74.50
611034 S&P 34" X 34" series 611 automatic exhaust damper. Max velocity of 2250 FPM. 1-2 Days $86.80
611035 S&P 35" X 35" series 611 automatic exhaust damper. Max velocity of 2250 FPM. 1-2 Days $86.80
611036 S&P 36" X 36" series 611 automatic exhaust damper. Max velocity of 2250 FPM. 1-2 Days $86.80
611040 S&P 40" X 40" series 611 automatic exhaust damper. Max velocity of 2250 FPM. 1-2 Days $113.60
611048 S&P 48" X 48" series 611 automatic exhaust damper. Max velocity of 2250 FPM. 1-2 Days $143.30
411611 S&P damper motor option. Ships loose. 115/230 VAC 60 Hz power open, spring return motor. 1-2 Days $141.10
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S&P 411 Dampers

S&P 611 Dampers

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