ORLANDO, Fla. - The world of grilles, registers, and diffusers has changed remarkably in the last few years. This was very evident at the 2005 International Air-Conditioning, Heating, Refrigerating ...
To some people, a diffuser is just a piece of metal that covers a hole in the ceiling. Occupants don't always understand what the diffuser does; instead, they may see it as the necessary evil that ...
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