FSH-7 filter sock holder mount accepts standard 4" filter sock.
Just hang the filter sock into the middle of the product,
and you can start to use it.

The FSH-7 fits aquarium rims up to 1/2".
There is no need for any tools in adjustment.
Turning the thumbscrews with only fingers to make the product fit anywhere.
You can also change the direction of the thumbscrews depending on your needs.
​Simple and easy to use!