Eshopps Eclipse Internal Overflow Box Kit, Medium The new Eclipse overflow box by Eshopps is a minimalistic 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 overflow system that requires installation. Features: Slim and Compact Design to suit any aquarium set-ups Slim black box design Come with a Red PVC for safety purpose Template included to help with installation Black lid cover to quiet the noise of water flow Specifications Model Dims. Internal Box Transfer Bulkhead Drain Bulkhead Max. Flow Rate Tank usage Eclipse S 6"x3"x6" 6"x1.25"x6 1 x 1.5" 2 x 1" 600GPH up to 75g Eclipse M 8"x3"x6" 8"x1.25"x6" 1 x 1.5" 2 x 1" 800GPH up to 100g Eclipse L 12"x3"x6" 12"x1.25"x6" 2 x 1.5" 3 x 1" 1000GPH 100-150g