Excessive dirt in PVs
Met up with a guy in the pool yesterday. Said he was a retired sheet metal worker. Saw them building Patio Villas using FIBERGLASS to fabricate the heating/cooling ducts. Said this was NOT a good material for this purpose. Constant air movement eats off the epoxy coating, subsequent air flow knocks off small glass fibers. These are not only dirty but very bad for people's lungs.
Google "Fiberglas hearing ducts" and see what you get.
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