So I was reading this local home inspector's blog about combusion air ducts and soon discovered mine connects to a damper, not a vent.
http://structuretech1.com/2013/03/combustion-air-ducts-part-ii-problems-and-solutions/
He recommends either replacing a damper with a vent or taking off the damper and covering it with hardware cloth. The hardware cloth seems much easier. Quick question though, how should I try to attach it? Staple gun? Some adhesive onto the plastic?
http://structuretech1.com/2013/03/combustion-air-ducts-part-ii-problems-and-solutions/
He recommends either replacing a damper with a vent or taking off the damper and covering it with hardware cloth. The hardware cloth seems much easier. Quick question though, how should I try to attach it? Staple gun? Some adhesive onto the plastic?