Isokern is the pioneer in modular masonry fireplace and chimney design having over 60 years of professional experience worldwide. With its modular, inter-locking construction, Isokern fireplace and chimney systems are lighter and easier to assemble than other systems. The environmentally friendly pumice stone offers a high insulation value and exhibits reflective qualities improving the burn efficiency of each fireplace produced. Isokern fireplace and chimney systems are perfect for indoor, outdoor, multifamily and commercial use.