PhotonS Low Profile Venting Base

This is a remix of the otherwise AWESOME Anycubic Photon & PhotonS De-Stinky-Nator (aka Airfilter) by IdefixRC. I already have a ventilation system installed for my airbrush spray booth, so I decided to mod the base to accept a 55x110 rectangular conduit (later decided to go for 100 round flex, so I made an adapter) and added adjustable feet.

The top of the base has a shallow groove for a seal, in which I glued some bicycle vent hose (not sure if that is the correct term in English) which is