Review on 🔍 Fette Filter 2-Pack of High-Quality HEPA Filters with 8 Carbon Replacement Filters – Compatible with Winix Filter A 115115, Size 21 – Plasma Wave Air Purifier 5300, 6300, 5300-2, 6300-2, P300, C535, AM90 by Robert Castro

Although the info said it would work with our set we found the filters were just too big and if you force them into blocks. The insert shell creates folds that allow unfiltered air to pass through. In addition, when inserting without a shell, there are gaps at the edges that allow air to flow through the filter again. So beware of anything that works with other products and be prepared to return them. How we are.