System 636® FGV Increaser Coupling, 2 x 1-1/2 in Size, Hub Connection, For Use With: Gas Fired Appliance Producing Flue Gases 65 deg C or Less, PVC
System 636® FGV Increaser Coupling, 2 x 1-1/2 in Size, Hub Connection, For Use With: Gas Fired Appliance Producing Flue Gases 65 deg C or Less, PVC