Upgrading the holding tank ventilation

Upgrading the holding tank ventilation on my Catalina 270. Also, for Catalina 270 owners, I highly recommend this great reference website. Amazing information supported by many images and details. www.virkki.com/...
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[@From_Refugee_To_Yacht_Owner]

Hi,
What’s the difference in this upgrade?

[@aquaholic3]

More available air volume to improve ventilation. Plus the added bonus of screens to prevent bugs from clogging the air vent.

[@From_Refugee_To_Yacht_Owner]

@@aquaholic3 oh! Great. Thanks