This is a Bezel that will fit around a rectangular humidity and temperature display that is normally used in a dry box.
With the bezel in place, you can put it in a vacuum bag and not have to worry about sharp corners puncturing the bag.
Also, the bezel allows for more venting aera around the display.
The battery compartment is easily accessible.
I printed the bezel with support around the bottom because of the small footprint and the bottom curves. cleans up easily.
Here's the link for the displays. https://www.amazon.com/gp/product/B07MCGDN5C?&linkCode=sl1&tag=gunplagallery-20&linkId=7890bb26259758008467d19faf8d41b1&language=en_US&ref_=as_li_ss_tl
The author marked this model as their own original creation.