The Ceiling Speaker Tile Reinforcement enables the CyberData VoIP Ceiling Speaker for 24-inch wide ceiling tile mounting. Ordering information: When ordering one of the following: - VoIP Ceiling Speaker (PN: 010844) - VoIP V2 Ceiling Speaker (PN: 011098, 011099) - VoIP V2 Talkback Ceiling Speaker (PN: 011022) - Ceiling Speaker Tile Reinforcement (PN: 010991) Please specify all of these items by their part number. Features: - Easy tile ceiling installation - Mounting kit included - Electrogalvinized steel construction - RoHS compliant - Part number: 010991 - Two years warranty