The Extron CPM105AM is a modular connector frame designed to mount in an OBO Bettermann – formerly Ackermann – floor box that holds GB3 insert modules. The CPM105AM can hold up to five single-space MAAP™ Mini AV Connectivity Modules. Black finish. Dimensions: 2.7" x 7.9" x 0.6" (7.0 x 20.0 x 1.6 cm)