Liner-Only 4 X 35

Chimney Liners -Liners meet all UL standards -For gas propane fired appliances, UL listed #4N23 -Temperature usage of 245 degrees C / 470 degrees F -15 year limited warranty These deluxe UL listed double thick aluminum liners were designed to be used with new gas furnaces, gas water heaters and gas log fireplaces being installed in homes with brick and masonry chimneys. Flue gases cause acidic condensation and over a period of time when vented into a cold chimney, may cause the chimney to crack and crumble. Carbon monoxide can seep into the home from cracks in the chimney which could cause health problems.