Shutter flap to prevent cold air flow when the fan stops. Frame housing with connection flange on both sides. Ribbed cold, with embedded lip. Leak-proof class 2. It is mounted on the inside of the device.
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Description
Shutter flap to prevent cold air flow when the fan stops. Frame housing with connection flange on both sides. Ribbed cold, with embedded lip. Leak-proof class 2. It is mounted on the inside of the device.