Use Premier Mounts VMCA2B I-Beam Adapter for VMCM1 to securely lock your monitor in place when using a ceiling mount and I-Beam This model is designed to mate specifically with the VMCM1 Premier Mounts ceiling mount system.
Designed Specifically
The VMCA2B is designed to specifically work with Premier Mounts VMCM1 ceiling mount. It fits perfectly and matches aesthetically.