The Spitfire Hearth Heater was developed to dramatically increase convection heat (hot air) coming from your fireplace. The unique design of this grate heater super heats the air within the exchanger tubes to over 400 degrees F and will produce up to 45,000+ BTUs of heat; enough to heat a large room! The Spitfire Heater has a smaller profile than our other tube style heaters and is able to fit into smaller fireplaces. It's super easy to install; simply assemble the blower on the tubes, seal it with the supplied silicone sealer, and place into your fireplace. - The Spitfire Hearth Heater features heavy-gauge aluminized steel tubes for long life. The blower is connected to the grate by means of a flexible tube which allows the blower to be positioned in front of the fireplace opening. Measures: 7 inch High x 17 1/2 inch Deep; 26 1/4 inch Front Width and 24 3/4 inch Back Width. - Must be used with the blower to cool properly. In the case of a power outage you will need to remove the unit from your fireplace before lighting a fire. - Features:Low cost - Ease to install - Easy Assembly - Fits small fireplaces - Delivers 45,000 BTUCompact 2 speed blower (30 CFM - Low, 50 CFM - High)Product Note: The product can be used with gas logs. However, the only time this product would be able to be used with gas is if the burner is able to fit under the unit. BEFORE YOU BURN: There will be a smell on the first burn as the oil in the tubes will burn off. This is normal. WARNING: If you have birds and animals in the house. They should be removed from the house on the first burn. People that are asthmatic and children should also not be in the area during the first burn.