4" Clear Adjustable Filter Sock Holder from Pure Flow
A Holder for 4" Filter Socks. Secures from both front or back of your tank/sump. They are made from clear, cast 1/4" acrylic with screws to adjust the tank wall fitting from either the front or back side. 6.5" x 5" x 1.75" total size. This will fit sumps from 1/8" to 1", or 1/8" with a standard glass aquarium rim. Fits over trim or brace up to 1" thick. Does *not* include filter sock or sump. Made in the USA.