Responce to Don:
I haven't seen any with tabs, but the ones with keyhole slots cannot be permanently installed as there is no way to tighten the screw. The plug strip just sets on the screw.
Don
I wonder how Bob [iWire] mounted his? But you are correct about the ability to tighten the screws or nail the units to the surface. I personally have bolted them to a surface using bolts and nuts to 1/2" plywood. The feet of the unit were turned in so a self taping screw could not be used. I inspected it myself and gave myself a green sticker
