These Dorchester heaters feature the larger bay window style glass door, providing better fire viewing from a wider range of angles. They are designed for larger spaces up to 1,800 square feet. The Dorchester series can be built from five to eight courses in height and has a 44.5 by 32 inch footprint. This series can include double-sided, tunnel doors, bake oven, mantle and a wide variety of bench designs. A minimum of six courses is required for a bake oven. Can be built with top or rear-exit flue locations. For more info visit http://www.greenstoneheat.com/greenstone-heaters-usa/