The grandest of our premium fireplaces, the 4237 Top Vent (TV) Deluxe is a massive showstopper that is perfect for great rooms with its 42” wide by 37” high glass and generous heat output. The magic of the 4237 lies within its ability to express the appeal of an open masonry fireplace while embodying the performance and functionality of Fireplace Xtrordinair’s superior gas heating technology.