INSERT INSTALLATION: Front dimension: 33"W X 8.84"D X 24.9"H and back dimension is 29.6"W X 7.7"D X 23.81"H. Minimum opening wall size：30”W x 8.6”D x 23.8”H. The electric fireplace insert provides supplemental heat for a room up to 400 sq.ft; 5000 BTU; the room will be warm in a few minutes. 6ft power cable; Use 120V AC MULTI FLAME MODES with LOG SPEAKER: Life-like resin logs, ember bed, 3 colors atmosphere light, variable brightness flame can be set according to your fancy; Log speaker design; Panel & remote control (Keep the distance to the fireplace within 11.5 feet) help you control the heater more convenient TWO HEAT OPTIONS with TIMER: This electric fireplace insert can be operated with or without heat. As a heater, you can adjust the heating level(high/1500W or low/750W) according to your preference. A built-in timer for auto-shut off can be set for 1H to 9H MODERN HOME DECOR: The fireplace insert can be perfectly installed in living room under TV, or entertainment center as a fireplace heater. Also it could be a decorative fireplace with no heat for year-round ambience SAFETY: This electric fireplace uses LED technology, which requires no gas/oil, and smokeless/ashless and energy saving. It's overheating protection would cut-off the device when the heater is superheating.