The Kuma Cascade LE wood insert can be installed in a masonry fireplace with the use of a 6″ flue liner and is capable of heating 2600 square feet or more. Our Kuma Cascade LE-1 insert will upgrade into an exceptionally efficient home heating center. Enjoy the fire while savoring the knowledge that its beauty is providing a clean-burning, efficient and economical comfort. Guaranteed for a lifetime of service, the Kuma Cascade LE is truly an excellent choice for your fireplace insert.