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Registered
Join Date: Jul 2010
Location: Where ever I am
Posts: 4,287
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remember that most office HVAC systems utilize a plenum return meaning all of the return air is pulled above the ceiling finding its way to the central return duct. Along the way it picks up what ever is along the path. Most filters are MERV 8 sort of like your house. Just sayin
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'86 944T black/red, chip, fuchs 8's and 9's- Sold
'97 Boxster silver/red, big mistake - Sold
'99 C2, silver/black, RoW M030 - sold
"69 912 white w/ '86 3.2L (like the pic, just not the pic)
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