The 23-inch electric fireplace insert is a versatile and convenient option for adding warmth and ambiance to any living space! Featuring a heat output of 5000 BTU, this electric fireplace insert is capable of heating up to 400 square feet, making it ideal for small to medium sized rooms. And the built-in thermostat allows you to adjust the heat output to your desired comfort level. As for visuals, the adjustable flame brightness creates the perfect ambiance for any occasion, whether it's a cozy evening or a gathering with friends and family. Safety is a top priority with this fireplace insert as it features overheating protection to prevent any potential accidents. Besides, the 6-hour timer design allows you to set the fireplace to automatically shut off after a predetermined time, giving you peace of mind and energy efficiency.