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Gravity Shutters
Product Description
- Extruded aluminum section frame.
- Blades formed from aluminum sheet.
- Blade stub shafts are brass.
- Bearing section in plastic PVC pushes.
- Sealing foam strips on the blades where they overlap to insure a good seal and to reduce noise.
- The blades are designed and positioned in such a way that if the pressure in the room increases, the blades automatically lift and open relieving the pressure in.
- When the room pressure is normalized the blades drop to the close position by gravity.
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