Auralex Cloud Anchor Mount for ProPanels Hardened plastic. Hand screwed into the fiberglass backing of C24 ProPanels to allow for ceiling installed cloud arrays. Intended for use on only the C24 or CT45 2" ProPanels. Cloud Anchors will puncture the fabric wrap of the 1" B22 and B24 ProPanels. Suspension cable and ceiling anchors not included. 4 cloud anchors required per panel for ceiling installation.