Opening – 12″ H x 48″ W; Framing – 41 5/8″ H x 54 1/2″ W x 11 1/2″ D; Barrier, On/Off Remote (Millivolt Models), Thermostat Variable Remote (IP Models), Battery Relocation Kit (IP Models), Crushed Glass may be installed with or without the log set. Uses about 2 sq. ft., flue pipe sold separately and does vary per house (HomeFires team will be in touch regarding specifics for each project)