Just took this of line last week. It is rated for up to 265 gallons. I had it on a 120 gallon DT, 15 gallon fuge with 30 gallon sump. Pepsi can for size reference Product Features: Best Design, Construction and Performance.AquaEuroUSA's Protein Skimmers are highly favored among aquarists due their Superior Craftsmanship Body Design Performance and Affordability. · Superior Craftsmanship · High Grade Acrylic Construction · High Quality Needle Wheel Pumps · Highly Efficient, Durable, Reliable · Simple to Set Up and Operate RPS-265 Specifications · Good for tank up to 265gal · Height: 30.11 · Diameter: 8.25” · FootPrint: 21” x 12.6” · Recalculating Pumps Included 2 3500 pumps