How does the integrated cleat work?

Integral Lighting has designed a small integrated cleat feature to eliminate headaches during installation.  Bend the cleat up from the plate an approximate 45 degree angle. When inserted into the masonry blade slot, the fixture will be retained. For future maintenance, the fixture can be removed by pulling it out. If possible, allow a few extra inches of wire inside or behind the wall for ease of maintenance.

Does the IL600 Series require drilling for installation?
What effect does dimming have on low voltage fixtures?