The stairs between garage and living areas became a more valuable space when I added this almost 50-feet of 5.5″ deep shelving. If the garage has a separate door for exiting in addition to the overhead motor operated door then the stair I understand is not a code required exit, otherwise this would not be permissible. Shelf height is adjustable using 3/32″ pins that recess into the bottom side edge of each shelf preventing the shelf from sliding forward. I built this in two 74″ wide sections. Modules are sized to the Golden Ratio and assembled using box joints.