Dayton 3C311


Shutter, Wall, 42 In

3C311 70422
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ItemExhaust Shutter
TypeGravity Operated, Double Panel
Fits Fan Dia. (In.)42
Overall Square (In.)45
Opening Required (In.)42-1/2 x 42-1/2
Frame Depth (In.)3
Open Depth (In.)6-1/4
Flange Width (In.)1-1/2
Mounting Hole Size (In.)9/32 x 1/2
Free Area (Square-Ft.)10.253
Max. Velocity (FPM)2500
Mounting PositionVertical
Blade MaterialWhite Painted Aluminum
Construction MaterialExtruded Aluminum Frame and G-90 Galvanized Tie Rod
For Use With Vertical Mounted Exhaust Fans
Weight 22.000000


Exhaust Shutter, Gravity Operated, Double Panel, Fits Fan Dia 42 In, Overall Square 45 In, Opening Required 42 1/2 x 42 1/2 In, Frame Depth 3 In, Open Depth 6 1/4 In, Flange Width 1 1/2 In, Free Area 10.253 Square-Ft, Max Velocity 2500 FPM, Vertical Mounting Position, Blade Material White Painted Aluminum, Extruded Aluminum Frame and G-90 Glavanized Tie Rod, For Use With Vertical Mounted Exhaust Fans

Single- and Double-Panel Exhaust Shutters
  • Efficient shutters for direct- or belt-driven exhaust fans are designed to prevent air backflow when the fan is off. Counterbalanced louvers with felted edges (except fiberglass models) open easily and seal quietly. Units with 54" and 60" galvanized and aluminum shutters have 4 additional tie rods on the discharge side for smooth, quiet operation.
  • Exhaust only Mount: vertical Max. velocity: 2500 FPM 1-1/2" flange
  • Extruded Aluminum Frame
  • For areas where corrosion may be a problem. Aluminum louvers have white enamel finish, galvanized steel reinforcement strip, and stainless steel rivets. 16-ga. frame depth: 2-1/2" for 10" to 24" models, 3" for models 30" and up.

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