Lovely 13++ Fireplace Exterior Vent Cover
Lovely 13++ Fireplace Exterior Vent Cover. Magnetic fireplace vent covers are the most common kind of airtight vent covers. They're simply magnetic sheets that fit over your normal vent draft decor's vent cover can be easily removed when you use your fireplace. About 3% of these are hvac systems & parts. Vent covers is a general term that is used to describe the covers placed over air ducts where heated or cooled air emerges from your hvac unit.