Hoffman P2TMM386 Top Mounting Module for Cable Management The Top Mounting Module installs to the top of an enclosure providing space for cable management, and facilitating cable passage into the enclosure from above. The module is constructed from a mini PROLINE frame, and as such is joinable to accommodate multi-bay solutions. Removable covers are supplied with the module for sealing purposes, while the standard Solid Top (sold separately or included with Industrial Package) is used to enclose the solution as it is mounted to the top of the module.