Rear Fan Filter housing for Creality K1

This is a two part housing for 120mm square Activated Carbon filter pads I bought from Amazon, you can stack 5 inside.

To fit to the printer I removed two of the screws from the rear fan and screwed some 30mm M3 cap screws through from the inside and into the rear of the filter back part, this holds it pretty well.

Then insert 5 of the 120mmx120mm pads and put the top on, it is an interference fit and should stay on OK.