Someone migh find this useful. Got a TCL 7.0 Cu Ft from Walmart.com delivered for $155. Tightly fits 4 cornys & co2 on the hump without a collar. Add a 8” collar you might get 5 or 6 in with 2 on the hump.
It helps with me cope with my anxiety from my obsession of minimizing possible problems that could occur if dirt or bacteria made its way some place that might causes issues.
In my crazy mind it helps protect the post & oring from nasties landing on them that could later be transferred to the beer, from dust to condensation. I spray with star San & cover with foil. I know it’s crazy but I’ve been doing it for many years. Making little dust caps