CPR Aquatics

CPR SOCKIT 4” SOCK-it Filter Sock Holder

Grouped product items
4" SOCK-it Filter Sock Holder with Filter Sock

SKU: 205961

In stock

Discontinued by Bulk Reef Supply

- +

The CPR Sock-It Filter Sock Holder is a simple filter sock holder using a gasket and acrylic holder. Very simple and inexpensive way to add filtration to any of your 1" outlets such as overflows and skimmer outlets.

Three models each sold with or without filter sock:

    4”- 1 inlet
    7”-1 inlet
    7”-2 inlet



  • Mechanical filtration made easy
  • Installs onto regular vertical wall and Euro-braced sumps
  • Tinted body and adjustable bracket height (approx 2”)
  • Adjustable length inlet; extends for quieter and cleaner installation
  • Requires vertical rims less than 1.25” thick and euro-bracing less than 0.50” thick
  • Available for 4 and 7 inch socks; sold with socks (DX) and without (regular)
  • Three models (4” 1 inlet, 7” 1 inlet, 7” 2 inlet) sold as DX or regular; 6 configurations
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Product Questions

Will these fit on the side of a 55 gallon aquarium that is used as a sump ?
Question by: David on Jan 2, 2019, 7:47 PM
Thank you for reaching out to Bulk Reef Supply! This product requires vertical rims less than 1.25” thick. I hope this was helpful. Please reach back out if you have any further questions!
Answer by: Ashley on Jan 7, 2019, 4:59 PM
What diameter is the pipe input on the 4" sock holder? I have 3/4" drains.
Question by: Anthony on Feb 19, 2017, 11:38 PM
Hey there! The plumbing input for this sock holder is 1", so you would need to use a reducing fitting from 1"-3/4" to fit your existing plumbing. :-)
Answer by: Randy on Feb 20, 2017, 4:53 PM
how wide is the holder, how much space (in inches) does it take up on the wall
Question by: Quin Higazi on Jun 5, 2016, 10:05 PM
Hey there!

The dimensions on are 4.75"L x 4.75"W x 2.375"H .
Answer by: Randy on Jun 9, 2016, 3:18 PM