Built for a working computer desk, this 38.5-in desk shelf lifts four open wooden shelves onto a steel frame and leaves a 26-in by 24-in bay underneath for a monitor of up to 27 in. The side rack bolts to the left or the right at assembly, so the tower of shelves lands away from the window glare or the wall, whichever the desk faces. The top shelf takes 110 lbs for a printer or a speaker pair, each side shelf holds 22 lbs, and a raised baffle keeps small items from dropping behind the desk. Adjustable foot pads level the frame on an uneven top.