When installing an enclosure (such as a 4 x 2 1/8 in. square metal box) above a suspended ceiling by means of support wires, the enclosure shall be secured using _____. The support wires shall be ____ ...
When you walk into a store or some other commercial building and look up at the ceiling and see something that looks akin to a tic-tac-toe board, chances are you are looking at a suspended ceiling. It ...
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