ClassicFlame 23EF031GRP 23" Electric Fireplace Insert with Safer Plug 4,600 BTU heater provides supplemental zone heating for up to 400 square feet Flame effect can be operated with or without heat, providing the ambiance of a gentle rolling fire all year long Spectrafire Plus offers 125 selectable flame effect options to create the perfect mood and ambiance for any style Adjustable thermostat allows you to decide the temperature of your room Simple, hassle-free installation, requires no venting or gas lines. Includes an owners manual and easy-to-follow instructions for installation.