Super 27 LE (Black Door)FOR HEATING MEDIUM SPACES Super 27HD Legendary performance for serious wood burners. The Super 27HD is based on our industry leading Super LE wood stove and features a heavy duty steel top, collar, and ash dump system standard. Combined with a 5 15 year warranty, this wood stove is the benchmark for heavy duty wood burners. TECHNICAL INFORMATION 72,000 BTU Cord Wood 38,200 BTU EPA Test Fuel Efficiency (HHV) 71. 3% Emissions 1. 8 gm hr. Log Size