The Isokern Vent Free 36" Gas Fireplace delivers clean, efficient flames without the need for a chimney or flue. Its compact design makes it ideal for smaller rooms while still creating a warm, inviting atmosphere. Vent-free design - no chimney or venting required Compatible with natural gas or liquid propane log sets Lightweight modular construction for easy installation Indoor use approved with 99% heating efficiency UL listed for safety and performance Vent-free gas log set (required) Decorative brick liner kits (herringbone, running bond)