Cable channel for concrete slab

I used this channel in a concrete slab mold for my MK3S+ to relocate the screen outside of my custom LACK table enclosure. It should work with almost any LACK-based enclosure with a slab up to 50mm thick. The ribbon cable connectors pass without issue.

The photo doesn't show much but the cables can be seen under the slab, going into the table to the underside.