This is an insect feeder box for reptiles. The back wall is textured to allow the bugs to crawl up for your reptile to catch!
saw this thing on the internet and they want $30 for one, fuck that spent 10 mins and designed a copycat. also, I prefer a honeycomb pattern over a simple grid
haven't printed it yet as my nozzle broke off in my hotend yesterday and I haven't gotten a replacement yet but there's no reason this simple print won't work