- Prevents Heating & Cooling From Escaping Through Exhaust Fan Opening
- Prevents Polluted Air Or Cooking Smells From Entering Into Other Parts Of The Home Or Workplace
- Saves Money On Heating And Cooling Costs
- Economically Priced
- Adapts To Ceiling Exhaust Fans Up To 300mm Diameter
- Easy And Fast Installation
- Allows Normal Operation Of Exhaust Fan