The overflow box effectively transports 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...

The overflow box effectively transports 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...

The new Eclipse overflow box by Eshopps is a minimalist design with a slim and clean black box that features a new to way to effectively transport water to your sump while killing noise level. This customizable project is a very simple plug and play...

The overflow box effectively transports 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...

The new Eclipse overflow box by Eshopps is a minimalist design with a slim and clean black box that features a new to way to effectively transport water to your sump while killing noise level. This customizable project is a very simple plug and play...

The new Eclipse overflow box by Eshopps is a minimalist design with a slim and clean black box that features a new to way to effectively transport water to your sump while killing noise level. This customizable project is a very simple plug and play...

The overflow box effectively transports 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...

The Prodigy by ESHOPPS is a new addition to the Color Series that combines Innovation and Creativity at its core. It was created for advanced aquarists with efficiency and beauty in mind. The Prodigy is the slimmest overflow ever created, elegantly built...

The Prodigy by ESHOPPS is a new addition to the Color Series that combines Innovation and Creativity at its core. It was created for advanced aquarists with efficiency and beauty in mind. The Prodigy is the slimmest overflow ever created, elegantly built...

Complete overflow system complete with: anti-clogging and easily removable suction grid; directional water jet; hoses*. Rated for upwards of 660 gallons per hour! It can be installed in aquariums with external sump filter and two drain holes. Xaqua...

Item # 89234 Model Compatibility Power Flow - All Models ID  about 1”. OD of the small is 2” 

ID about 1”. OD of the large is 3”

Box says freshwater, it's the exact same version as the regular one, just with a green label. Complete overflow system complete with: anti-clogging and easily removable suction grid; directional water jet; hoses*. Rated for upwards of 660 gallons per...