QD-LFK5 Hinged Return Air Vent
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The hinged return air vent installs a frame, special door lock and hinge to the base of a stationary louver for filter and washer kit installation. Users lift the bolt on both sides to open the door and remove the filter. When the door closes, the spring door lock will automatically lock. The hinged return air vent is widely used in residential and hotel spaces.
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