CRL's Horizontal Wall Anchors are designed to attach and support Cable System shelves to a wall or substrate. When Cable System shelving units are designed to have Cables supporting only the front edges of the shelves, the Horizontal Wall Anchor is the ideal component to secure and support the glass shelf against the wall. These matching components should be installed into wall studs for maximum support. The Wall Anchor has a weight capacity of 20 lbs. (9 kg). Each package contains one Support, one Cover Disk, and one Dual Threaded Screw.