The overflow box effectively transport aquarium water to under cabinet sumps, refugiums, or wet/dry filters.

These high quality overflow boxes features bulkhead fittings for secure and convenient installation.

The U-tube style compact overflow boxes are designed to fit between your tank and your wall to maximize space usage in your aquarium setup.

With only 3 in. required between your tank and your wall, these boxes are excellent for optimizing space.

Each box includes everything required to attach it to your system.

FEATURES: 

• U-tube
• Cylinder Foams
• Nylon screw and wing nuts
• Pre-filter Box