Maple Veneer Bookshelves Daniel Donnelly These are individual bookshelves that stack beautifully, available in two lengths and three heights, allowing the customer a large number of configurations. The shelves are 36" and 48", and the three height variations are: A-11.25", B-16.5" and C-20.5" The photo shows two 48" shelves, above and below, a 36" shelf.