Vent cover for Zen float tent

>**Note: I've created an improved version of this, which you can find at https://www.thingiverse.com/thing:3085350**

This is a replacement vent cover for the vents on a zen float tent.

The inner fins on the zen's vent cover have a tendancy to break off, and are a bit annoying to insert into the vent.

This is a "drop in" replacement, with heftier fins that are tapered at the end, for ease of insertion.

Note: The fins are long enough that if you have one on the bottom and top of the ve