23" Infrared Electric Insert 23II200GRA INSERT ONLY to be ordered with Sterling, Oxford & Infrared Corinth 23" Infrared Insert in black finish Infrared technology can warm a room up to 1000 square feet Uses 3 Infrared quartz elements for heat Energy saving all LED technology, requires no venting or gas lines Can be used with or without heat for all season enjoyment 23" Infrared Insert in black finish Infrared technology can warm a room up to 1000 sq.ft. Uses 3 Infrared quartz elements for heat Energy saving all LED technology, requires no venting or gas lines Can be used with or without heat for all season enjoyment