The book shelf this plan helps you build is held together without using any permanent joinery or hardware, so it "knocks-down" for easy moving and storage -- it's also very sturdy. Bookshelf is 47-1/2" wide, 13-1/2" deep, 36-1/2" high. The plans you receive have large format measured drawings, a materials list, plus a super-detailed photo instruction booklet. The shelves rest on dowels in the end frames, making the whole unit easy to disassemble by lifting the shelves off the end frames. A few woodworking tricks described in the booklet will sturdy the unit right up and keep the shelves from bowing under the weight of books.