Defective shower filter
These filters are bigger than a baseball and if you’re planning on connecting a handheld shower to it, it won’t fit. The design is defective. You’ll have to buy handheld shower holders, from Amazon, which stick on the side of the shower wall to hold it up. Poor design. Kohler makes a better design which is a slim filter which fits any handheld extension .I disputed this charge because I found it useless by design. Twice I disputed and they said I would have to pay a plumber to disconnect it and send it back,