Check the listing for details. Prodigy M Slimline Overflow Box - Eshopps. Condition: New. Listed at 179.98 USD. 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 rear external box that notably saves space within the tank. It includes everything you need for an easy “plug and play” installation. Features Worlds Slimmest Overflow box Adjustable Water Height Weir Recessed External Overflow Cover It comes with diamond hole saw, template guide, recessed external overflow cover. Specifications Item# 95857 Dimensions Internal: 8x5/8x6" External: 8x5/8x6" Flow Rate Up to 700 GPH Glass Thickness Up to 5/8" Tank Size 20-70g Listing and template services provided by inkFrog