Dundas-Jafine 4" Dryer Vent Cover Spacer

I was installing a gas dryer in my home, and had to vent it outside. I cut a hole through the wall that was big enough for the metal vent, but not big enough for the plastic vent cover to fit. Instead of modifying the hole to be larger, I designed and printed a spacer that allowed the vent cover to attach to the vent.

The vent diameter is 4", and the outdoor vent cover has a diameter of 4 1/16". The brand is Dundas-Jafine, which is ubiquitous across Canada at Home Hardware and Home Depot.