Qmark's electric convection heaters all feature the same height and depth, but come in a variety of length options. Ideal for offices, conference rooms, hallways, lobbies, waiting rooms, conference rooms, and other commercial spaces, these heaters have a variety of size options for any of your needs. Wattage Length Height  Depth  400 watts  24 16 5 750 watts  36 16 5 1000 watts 48 16 5 1250 watts 60 16 5 1500 watts  72 16 5 2000 watts 96 16 5