waterbox 7x10 inch filter sock replacement?

[BryanM]

weird size, surprised I cannot find on amazon. WB wants a mint for them... just curios if someone's found a reasonable replacement.

Bonus, I don't plan on using them forever, but WOW, without them installed the tank is now quite noisy.. Fix?

 

[exnisstech]

I ran these in my WB 330.7. It says 7 x 14" but they fit fine. They're a little harder to clean than mesh much much easier than felt. Unavailable now but they may have some comparable

I was able to clean those with a garden hose but when it got cold here I I switched to premium aquatics 200 micron mesh socks so I can clean them in my utility tub. They are too long but still work. By work I mean they trap enough to become clogged and overflow.