After 70 years of unparalleled performance in the construction industry, Earthcore’s Isokern line has become the most trusted modular system in the world. Isokern Fireplace & Chimney components are lightweight, while retaining UL 127 and UL 103HT (respectively) listings. Consequently, our Isokern Fireplace & Chimney Systems are less expensive to install than traditional masonry fireplaces. And, unlike typical metal box fireplaces or concrete systems, they are built to last forever.

Selkirk's Premium Series™ chimney is packed with one inch of premium fiber insulation, ensuring a 100% fill. This superior insulation maintains higher internal flue temperatures, enhancing draft and efficiency. Low temperatures are maintained on the outer casing, allowing installation as close as 2" from combustible materials.