The Linear H312Kit 12" Enclosure provides grid mounting space for Linear structured wiring components. The enclosure is ETL listed and features two 9-1/2" columns. Structured wiring modules snap securely into the enclosure's mounting grid. The enclosure mounts in the wall between standard 16" spaced studs or it can be surface-mounted. The flexi-mount system features four flexible mounting tabs on the sides of the enclosure. The flexi-mount tabs compensate for varying stud spacing and allow for adjusting the depth of the cabinet for flush mounting with all thicknesses of drywall. A snap-on cover that can be screwed shut is supplied with the enclosure. The vented cover has a raised interior, allowing for easy wiring and better component cooling. Eight combination conduit knockouts fit either 2" or 1/2" conduit fittings. The enclosure has an additional knockout on the bottom to mount a single-gang junction box for AC outlet installation.