built-in shelves
nounUK /ˌbɪlt ˈɪn ʃelvz/
US /ˌbɪlt ˈɪn ʃelvz/
Shelves that are made as part of a wall or piece of furniture and cannot be moved.
The books fit perfectly on the built-in shelves beside the fireplace.
OTHER MEANINGS
2. Shelving that is permanently attached inside a closet or alcove.
The closet has built-in shelves for shoes and folded clothes.
3. Shelves constructed into a piece of furniture such as a desk or bed.
The bunk bed comes with built-in shelves for toys.
4. Shelving designed and installed as part of a room's original structure.
The old library still has its original built-in shelves.