بغداد لمخارج الهواء

A horizontal operable shutter which operates to equalized the pressure across it.

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.