Shelf supports are used on the inside of built-in-cupboards. 

The inside walls of the cupboards would normally feature a series of partially drilled holes and it is here where the shelf supports can be pushed into and where after a shelf is placed on.

• Four shelf supports are required to keep a shelf in place.
• Two shelf supports are placed on each side at the back and the front of the shelf.
• The hole size for the cupboards should be 5mm.