Simplicity Sock Holder 4in

Convert your aquarium into a sump with our filter sock holder and a filter sock. These holders are constructed using durable, long-lasting materials and include nylon screws that allow you to adjust for your tanks walls to ensure the brackets is securely held in place.

The 4-inch filter sock holder will pair with any 4-inch filter socks and can be adjusted for a maximum wall thickness of 1.5 inches.