Red Sea Filter Socks, Are there 3.5" aftermarket socks available ?

[siggy]

I am trying to find affordable filter socks for my red sea sump other than the $10.99 that are available.
Looking to buy a dozen or three. thanks

 

[phatduckk]

would love to know myself... following

 

[Crabby48]

Awhile back I think @pelphrey trimmed 4” socks to fit the Red Sea. May want to check with him

 

[siggy]

I called a filter supplier / manufacturer to get these made or find them. Of course I have to buy bulk.
What size does Water Box use?

 

[siggy]

Turns out the nylon ring is a show stopper unless I order 1K or more. Well as it TURNS out I have access to a couple of Seal machines (CNC) that will be making these rings in bulk. Im coming up with a design to slide a sock on the ring and secure with a ty-rap, glue or sew. these are concepts at this point.
Looking for feedback on styles

 

[pelphrey]

I used to buy the BRS socks and cut the ring down to fit the reefer Sump!

 

[siggy]

I used to buy the BRS socks and cut the ring down to fit the reefer Sump!

Thats what Im doing with the dozen I have, they like to pop up and won't sit flush. I'll be in the shop this week
and will try to make a few rings.