This fiberglass duct board was in the airstream of an HVAC system. Picture courtesy of Scott McReynolds.
Fiberglass duct board in the airstream of an HVAC system. Picture courtesy of Scott McReynolds.
This fiberglass duct board was in the airstream of an HVAC system. Picture courtesy of Scott McReynolds.
Fiberglass duct board in the airstream of an HVAC system. Picture courtesy of Scott McReynolds.
