Mounting Frame, Outside Height 48 in, Outside Width 24 in, Frame Extends 1/8 in, For Use With 54UD18, 54UD19, 54UD20, 54UD21, Mounting Type Surface, Gray, Fits kW. 500 to. 750 kW, Material Steel, Includes (2) Side Frames, (2) End Frames, and (8) Screws, Standards UL Listed, CUL Listed. This item has been restricted from sale in the following state (s): []