Chimney Liner Depot manufactures stainless-steel flexible and rigid chimney liners and components in-house, selling factory-direct to homeowners rather than reselling another maker’s products. Based in Gouldsboro, Pennsylvania, the company also custom-builds chimney parts such as multi-flue caps and chase covers, and backs its stainless liners with a lifetime warranty. Its technicians support do-it-yourself installations with sizing guidance, planning help and instructional materials.