A white bookcase that starts at 38 in and grows: metal hinges lock a second unit on top, so the same footprint doubles when a collection outgrows one column. Open cubes 11 in square keep current reads and framed photos in view, while a closed cabinet behind a 21.5-in door hides routers, cables, and paperwork. A shelf inside moves through three positions, clearing height for tall files or splitting the bay in two. The top carries up to 110 lbs and each cube holds 44 lbs, metal legs raise the base 4.5 in for easy cleaning, and two anti-toppling devices fix the frame to the wall.