HappyCatzFind your filterPARTS EXPLAINED · 2 MIN READ
PETKIT Filter Unit 3.0 or RECT?
Two filter names, different supported fountains. Start with your exact EverSweet model.
“EverSweet” is a product family, not enough information to choose a filter. Two current PETKIT listings name different supported models.
Filter Unit 3.0 — P4161
The manufacturer lists EverSweet 3 Pro, 3 Pro (UVC), Solo 2 and Solo SE under this filter’s application specifications.
Filter Unit RECT — P4171
The RECT listing identifies EverSweet Max (Cordless). Do not use the shared EverSweet name to assume it takes the same part as a Solo 2.
Make the match before shopping
Read the full name on your fountain or purchase record. Select that exact model in our finder, then check the linked manufacturer page again before paying. If you have a newer Max version or a model absent from the named list, this article does not establish its compatibility.
Keep a note with three fields: fountain model, filter reference and the date you checked it. That small record is more useful than a screenshot of an unlabeled filter pack.
These are researched specification matches. We have not physically tested the parts, and this comparison does not establish that one filter improves your cat’s health.
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Check Filter Unit 3.0 specifications