Marketing InformationThe model 91 catalytic is our most popular selling wood stove. Used as a masonry fireplace insert or free-standing, this unit easily accepts 21 in logs and heats up to 3200 sq-ft with an astonishing 10400 to 62745 Btu/hr. Features include a factory installed blower, high efficiency heat exchange, ash removal tray and oversized glass door with air wash system. Side windows come in standard black, gold and pewter side windows can be purchased separately.