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Actual product may vary from photos.
The Hart & Cooley 5ALK25 has been discontinued.
Please call us for a suitable alternate product.

(800) 865-5931

Mon-Fri 8am-7pm, Sat 9am-3pm CT

Hart & Cooley UL-listed aluminum chimney liner systems come in 3 inch through 6 inch diameters, 25 foot and 35 foot lengths. The kit includes the components you will need to complete the project including: liner, cap, flashing, mortar sleeve, screws and installation instructions. These flexible liners may be used to line new or existing interior masonry or factory-built chimneys or vents. They permit a zero air space clearance (direct contact) between the liner and the chimney interior surface. The masonry chimney also may have a zero air space clearance to combustibles and the chimney exterior surface. Hart & Cooley aluminum liners may be used to vent listed Category I gas-fired appliances (not oil or wood) and other equipment listed for use with Type B gas vents.

25 Feet
5 Inches
Limited Warranty
10 Years

In 2002 Alpine Home Air Products became the first company to sell heating, air conditioning and indoor air-quality products online. We have proudly served hundreds of thousands of customers, helping them save time and money by buying their products direct.