Duluth Forge’s Dual Fuel Ventless Fireplaces are an excellent alternative to traditional wood fireplaces. Since they do not require an outside duct or chimney, they can be placed anywhere within your home. Our state of the art fireplace insert features thermostat control functions, battery assisted ignition, and much more. Our realistic log and burner technology brings the look and feel of real fire to your home. These economical, efficient fireplace systems provide your family with the supplemental heat you seek, without skimping on style or ambiance. Product Features 32,000 Maximum BTU heats up to 1,500 square feet of living space Patented Dual Fuel Technology operates off Natural Gas or Liquid Propane Safety Assurance: O.D.S. (Oxygen Depletion Sensor) included with automatic shut-off Dual Precision Ported Ventless gas burner Battery assisted Piezo ignition 6 realistic hand painted Ceramic Fiber Logs Thermostat Controlled Walnut Furniture Grade Finish Gas Fireplace Insert Model#: FDF400T-ZC Product Dimensions: 44"H x 44"W x 15.75"D Some assembly required. This Product Is Proudly Assembled in the USA Using Parts Manufactured in the USA! Designed, Engineered, Assembled and Tested in the USA. Skilled American workers manufacture parts, assemble and test our products. Only high-quality materials and parts are used in the manufacturing of our products. Our factory features state of the art manufacturing equipment. Product ships from our domestic warehouse in Kentucky, USA.