I was originally using the vimark single boxes for my farm but since they are not cheap especially when you go to larger versions i figured PETG and printing might help since I needed at least 20.

While looking elsewhere everyone else's models seem to all use screws or bolts to hold the cover on and this is not ideal when at the top of a ladder trying to scramble to get the lid on.

The hole size is not standard but could be modified if you want to add grommets from onshape.

https://cad.onshape.com/documents/bafed690c8e31e37fe62735a/w/d690480da3411cfefac892dd/e/bd4b6fc375eaac22357f334b?renderMode=0&uiState=696153ee2d887ea2050eee4e

My printer does not like PETG at all and makes quite a mess.