Summit Insert LESummit Insert LE FOR HEATING MEDIUM TO LARGE SPACES For rooms with larger masonry fireplaces, the Summit Insert LE is the solution. With Extended Burn Technology, the Summit insert LE provides ten full hours of controlled burning, for a full night of wood heated comfort. An efficient, clean burning heat source, the Summit insert LE is easy to light and use, with a large window that provides a clear view of the flame. TECHNICAL INFORMATION 99,000 BTU