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|Material:||Plastic||Diameter:||100mm, 125mm, 150mm, 200mm|
back draught shutter,
extractor fan with backdraught shutter
Plastic fan backdraught shutter non return check valve for prevent insects and smoke
1. Made of ABS plastic, which is antistatic and ageing resistant. It can keep away distortion for a long time.
2. The outlet sizes choice : 100mm, 125mm, 150mm, 200mm, etc.
Benefits to set this product to the ventilation pipe:
prevent outside air from penetrating the home.
prevent the smoke from public pipe enter into the home.
prevent insects fly or climb into the ventilation pipe.