I've been modifying the ALS enclosure (for the one-arm test) as our test case for modifying all ISC enclosures for adLIGO. The work is mostly done; as illustrated below, patch panels and small exhaust louvers have been added (made of aluminum, and with no clear optical line-of-sight) to the sides and the enclosure panels modified accordingly. The top of the enclosure has been altered to accommodate a 2'x3' HEPA fan filter (not yet wired). Cable trays and shelves are suspended near the top of the inside of the enclosure, freeing table space previously used for running cables. The panels on back which had periscope holes drilled have also been replaced with fresh panels, so the new periscopes can be positioned as need be.

Still left to do:
Implement laser safety locks on enclosure (still under discussion).
Add and wire interior lighting.
Wire up HEPA and test flow.
Add acoustic insulation back to replaced panels if needed.