Duluth Forge Dual Fuel Vent Free Insert-26,000 BTU, Remote Control Fireplace Insert, Black Patented Dual Fuel Technology: Liquid Propane and Natural Gas Remote Control Included Economical: 99.9% efficient. No outside duct or chimney needed! Product Dimensions: 29.1"W X 23.9"H X 13.9"D Gas Fireplace Model Number: FDF300R