At this time we only sell one size insert. Our product has been in research and development for five years and has been very complicated to develop. We will not be adding different size inserts in the foreseeable future.
However you can frame in or trim in around the insert and for most people it’s a pretty decent size; even on a large wall. Considering the realism of the flame it’s the best choice for an electric fireplace, if the look of a real fire is important for you. The smaller size is a trade-off for added realism.