The aluminum front panel is 15" x 11" (38.1 x 28 cm). The dimensions of the rectangle around the border where the screw holes are is about 36.8 x x 26.4 cm. The case is 10.5" (26.7 cm) from back to front, 10.8 cm tall in the back, and 3.8 cm tall in the front. Everything fits reasonably well inside--there's some extra space, but especially in the front a lot of that is taken up by the front panel. The height in the back is just right for the stack of Genesis boards.