RussellMc wrote on 30/05/2017 11:47:
> Theories so far are lapping disks or spinnerets.

> http://www.trademe.co.nz/business-farming-industry/industrial/other/aucti=
on-1336533507.htm

Looking at the HoffmanOnline.com catalog (p 1290), they're stainless=20
steel vent drains for a thermoelectric dehumidifier to allow accumulated=20
water to drain out the bottom of an enclosure. The UL-approved vent=20
drains also function as an air pressure equalizer, reducing the harmful=20
effects of temperature-induced vacuums that could pull water and=20
moisture into the enclosure.

Maybe ...


--=20
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