638-011

This 4" x 25" chimney liner is a critical component for the safe and efficient venting of heating appliances. Designed to be installed within a masonry chimney, this flexible metal venting provides a continuous and secure path for combustion gases to exit the home. It is primarily used to protect the chimney structure from the corrosive effects of flue gas condensate and to ensure a proper draft for gas-fired equipment. Ideal for furnace replacements or water heater upgrades, this durable liner helps maintain indoor air quality and prevents hazardous exhaust leaks. Its flexible design allows for easy navigation through chimney offsets and bends, making it a versatile solution for chimney restoration and HVAC maintenance projects.
Type: Metal Venting / Chimney Liner
Size: 4-Inch Diameter
Dimensions: 25" × 4" × 4"
Application: Relining masonry chimneys for gas-fired furnaces, water heaters, and boilers; suitable for Category I atmospheric gas appliances.
Specifications: Flexible metallic construction, corrosion-resistant, heat-resistant, designed for chimney exhaust systems.