4" Filter Sock & Drain Holder + Bulkhead & Sock. Refugium Micron Bag Pre Filter
Modular Marine 4" Hang-on Filter Sock and Bulkhead Drain Holder(bulkhead and filter sock included)
- Hangs over tank + trim up to 1.3" - Low profile: 4" wide x 4.5" - 1" bulkhead included - 4" drawstring filter sock included - CNC machined - Smooth polished edges - Made entirely from high grade 1/4" cell cast acrylic - Includes 2 adjustable thumb screws - Professionally made with the highest of quality in the USA!
Our design is superior to other designs due to the front adjustable mounting screw placement. Most other designs have the screws on the back which do not work with tanks or sumps that have trim or perimeter bracing rails.