This sleeve is designed to shield this Pur brand water filter from algae producing sunlight. If you don't have room to spare in the fridge, and your carafe sits out on the counter, chances are you're going to be growing some algae. This blue PLA blocks the light pretty well.

I cannot find a model number on the carafe and it's quite old so I wouldn't print this unless you are convinced that you have the same model. Here are a few measurements that might help: the top is 190mm x 115mm, the bottom is 175mm x 95mm, and the height is 234mm.