Monessen 4" Uninsulated Flex Duct For Outside Air btu52500 Cast iron arch doors

Cast iron arch doors

the specialty sets are crafted to meet the needs of specific fireplace types

Sized to fit in a stud wall

For Boulevard Linear Contemporary Direct-Vent Fireplace

Monessen 4" Uninsulated Flex Duct For Outside Air btu52500 Cast iron arch doorsUninsulated Flex Duct The Monessen UD4 4 inch Uninsulated FlexDuct for Outside Air is just one of the many options offered by Monessen. This particular FlexDuct is 4" (100 mm) in diameter. The model number refers to two 42" (1065 mm) sections. The FlexDuct is uninsulated, so it won't be moving incredibly hot air around. It's specifically designed to work well with outside air. Features Weighs 3 pound 4" (100mm) in diameter Uninsulated flex duct for