Well it's a great filter very good product

Fits hooded cat litter box perfect once cut and helps with odour

I brought this charcoal filter to cut to size for my kittens litter tray as my kittens had chewed up the one that it came with. It was easy to cut to size & was quite stiff so I was able to feed it through where the old chewed one was. It's very effective in keeping the tray from smelling bad.

Plenty big enough for a covered litter tray, happy with purchase.