Children's favorite books and toys are right at home on these sturdy birch bookcases. Bookcases feature an integrated anti-tipping wall mounting bracket, and pre-assembled reinforced base for extra durability and simpler assembly. Shelves adjust on a 1.25" spacing. The base shelf measures 10.25" deep; all other shelves have a depth of 11". WARNING: Children climbing on furniture can lead to death or serious injury due to tipping. Secure unit to wall using appropriate hardware.