A fireplace that's suitable for in-wall installation doesn't have to be tiny, and it doesn't need to lack any power. In fact, it can be something like this 36-Inch Tahoe Deluxe Clean Face Direct Vent Gas Fireplace that has all of the heating capacity, and lots of other useful features to boot. Includes Burner, Ember Bed, 6-piece Ceramic Fiber Log Set, Barrier Screen and Electrical Junction Box. Features Model # DVCD36FP71P. Fuel Liquid Propane. With Variable Speed Blower. Manual variable flame height. Matte black interior walls. Black clean face. Top or rear vent field convertible. Control panel located behind lower panel. Intermittent Pilot with On/Off Switch Battery Backup and AC Adapter . Manufactured for indoor use. Btu/Hr 14,000 20,000. Dimensions Overall dimensions 37 W Front x 35.62 H x 16.37 D x 24.5 W Rear . Rough framing dimensions 37.37 W x 35.75 H x 16.37 D . Viewing area dimensions 34 W x 23.16 H 782 sq. .