Product details:

Made from 16-gauge steel with a black powder coat epoxy finish this 18.2 wide by 16 deep folding shelf features a flanged front lip that helps keep items from sliding off the shelf. You can install the shelf platform over or under the support to suit your needs. It features a bidirectional keyhole mounting slots set 16 apart for mounting to wall studs.Two oblong cable cutouts enable you to run cable through the shelf which keeps them out of the way as opposed to having them hang over the edge which can lead to excess wear and tear and damage. Large cutouts in the back plate allow you to mount the shelf over existing fixtures and power outlets without obstructing them.