The electrical contractor of today is using products that increase his productivity and maximize the potential profit of his labor. They have a large choice of nail-on products that already have the fasteners attached to the ceiling box and all they have to do is hold it in place and nail or screw it into a joist or truss for it to be secured. Many of these boxes are thermoplastics which are inexpensive and easy to manufacture. They also have the added advantage of not needing to be electrically grounded so this saves the additional labor that metal boxes require.
This fact is not lost on the ceiling box manufacturers that are producing ceiling, outlet and junction boxes that are quick to install and are made of plastics that require less and less labor to install properly. This has gotten to the point that there is now a lighting box that only needs to be pushed onto a wooden stud for it to be secured; no fasteners are needed at all!
Many have heard of the proverbial glass ceiling and how the phrase is euphemistically used to describe an unfair system that prevents people (i.e., women and minorities) from advancing in their professions. The plexiglass ceiling describes the same type of unfair system with additional rigor used to prevent advancements-plexiglass is 17 times stronger than glass. While glass ceilings denote an inability to see the barriers, plexiglass ceilings are not as transparent. The victims of plexiglass ceiling see the barriers, but do not recognize a way around them.
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