The “10” in W10pr stands for the 10-inch filter cartridge it accepts. This is the standard size for most whole-house filtration. But here’s the kicker: it also accepts the big boy cartridges, like the 20-inch version with a special adapter.
Why does that matter? Because a bigger filter means less frequent changes. Your average sediment filter catches sand, rust, and silt. The W10pr is basically a bouncer for your pipes, checking IDs and kicking out grit. If you have well water, this housing is your new best friend—it’ll laugh in the face of the dirtiest water you can throw at it.
American Plumber W10-pr 152014 1" Filter Housing for sale online | eBay
Also, you can see through the translucent sump. It’s like a lava lamp, but the lava is gross stuff you don’t want touching your skin. Gross, but weirdly hypnotizing.
The Surprising Fact That Will Impress Your Plumber
Here’s a party trick: the W10pr has reinforced metal inserts molded right into the nylon at the connection points. Most plastic housings just have plastic threads that bite into plastic. Over time, they strip, leak, and force you to replace the whole unit.
Not this one. The metal inserts mean you can tighten and loosen it thousands of times without fear. This is the only housing I know of that might outlive your house. It’s like the Nokia 3310 of plumbing—indestructible, reliable, and slightly clunky-looking.
Another shocker: despite being American-made, it’s surprisingly affordable. You’d expect a “heavy duty” label to cost a mortgage payment. But no. The W10pr is the sensible dad-mobile of water filtration—not flashy, but built to get you home safely for 30 years.
