Yeah I have the aluminum Chen Ming version which might be the next size up (aka Antec SX1040?) because it has 2x 80mm rear exhaust fan mounts, temporarily in retirement due to the small 80mm fan mounts. It might be what I use to build a replacement NAS box in one of these days since that won't need much airflow, and put it in same location where I can't hear it.
I must have really liked it back in the day because although it already had a windowed side panel, newegg had a sale on the (same) Chieftech windowed side panels for $2 + $5 S/H so I bought a spare side panel that's been sitting in my basement for 22 years! Unfortunately the window is brittle acrylic so not so easy to cut out a fan hole in it, maybe strapping a glass cutter to a compass would get the job done, or just buy a sheet of polycarb which is easier to machine.