Right now my collection sits in an open space near a walkway. I estimate the number of pieces stored here is somewhere between 8000-10,000, with empty room remaining inside for 30-40% more. It takes up 30"w (76cm) x 29"h (74 cm) x 12"d (31cm). Because they're light & easy to move, I've stored them in other places too, like under my bar with the drawers in front and the carry cases in back. Since these letter-paper drawers and matching CD boxes are readily available, I could easily double the capacity of my storage system for just about $100 more, and only need 12" more width or 30" more height.