The AquaMaxx 4" Filter Sock Holder is a great way to add mechanical filtration to your system. Made of high-quality acrylic, the AquaMaxx filter sock holder is durable, easy-to-use and looks great!
- Accommodates aquarium rims up to 1"
- Includes thumbscrews to secure holder to your sump
- Accepts standard 4" diameter filter socks