Firestop Mount for Wanhoe Duplicator i3 / Maker Select V2

I recently read about 3D printers catching on fire and wanted to add some extra protection for unattended printing.
The Stovetop Firestop canister seems to be doing a good job putting kitchen stove fires out:
https://www.youtube.com/watch?v=6amohZZaYTo
I created a mount for it. Just add the firestop and seal the top (I used a glue gun). Then mount between the frame and spool holder. I used longer screws but the stock screws might work as well.
Let's hope it will never go off ;-)