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Triangle brand 4" Deep Gravity Operated Back Draft Damper for Industrial Exhaust Fans (Sizes 24" to 60" Bolt On)
Price:
$135.05
IWS SERIES AUTOMATIC SHUTTERS
◆ May be used with belt or direct drive fans
◆ Opens automatically when fan is turned on and closes when air flow stops
◆ Frames are heavy-gauge galvanized steel with powder coat finish
◆ Extruded aluminum shutter blades attach with bronze bushings and steel fasteners.
This eliminates rust and corrosion, permitting continuous, smooth operation without lubrication
◆ Available for all PFG fans, Standard on SLW series fans
◆ Available for all PFG fans, Standard on SLW series fans
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INDUSTRIAL WALL SHUTTERS
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| Model No. | For Fan Size | Outside Dimension | Inside Dimension | Depth | Ship Wt. |
| IWS 24 | 24" | 33⅜ X 33⅜ | 31" X 31" | 4" | 26 |
| IWS 30 | 30" | 36⅜ X 36⅜ | 34" X 34" | 4" | 29 |
| IWS 33 | 33" | 39⅜ X 39⅜ | 37" X 37" | 4" | 33 |
| IWS 36 | 36" | 42⅜ X 42⅜ | 40" X 40" | 4" | 39 |
| IWS 39 | 42" | 45⅜ X 45⅜ | 43" X 43" | 4" | 42 |
| IWS 42 | 42" | 48⅜ X 48⅜ | 46" X 46" | 4" | 44 |
| IWS 45 | 48" | 51⅜ X 51⅜ | 49" X 49" | 4" | 49 |
| IWS 48 | 48" | 54⅜ X 54⅜ | 52" X 52" | 4" | 55 |
| DOUBLE PANEL WALL SHUTTERS | |||||
| IWS 54 | 54" | 63⅜ X 63⅜ | 61" X 61" | 4.5" | 76 |
| IWS 60 | 60" | 69⅜ X 69⅜ | 67" X 67" | 4.5" | 88 |
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