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 ...
ANAHEIM, Calif. - You might be wondering, "What could possibly be new in the area of grilles, registers, and diffusers?" If you attended the 2004 International Air-Conditioning, Heating, Refrigerating ...
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