They fit perfectly on my Brondell Swash 1400 Luxury Bide toilet seat. I would like to know what kind of filter it is. I can surmise it's probably a sediment filter based on the recommended 2 minute water run after installation. I found a similar filter on a Chinese website that said it was 10 microns, but who knows if it's the same product. When it's time to change the filter I can open it up and take a look. I mean it could just be a series of grids.
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