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Ceiling vents - innies and outies?!

larry
in Mechanical Ventilation with Heat Recovery (MVHR)

Featured Replies

So I picked up a load of ceiling vents from eBay. One box were 'outies' and one were 'innies'. It only makes sense from the photos! Is one for extract and one for supply or does it not matter? Thanks! 

IMG_20210325_200729_1.jpg

IMG_20210325_200828_1.jpg

  • Author

Legend. Thanks for such a quick reply!

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