Details from their website:

The Reef Octopus RO-PS-2000INT Protein Skimmer offers the very pinnacle of in-sump protein skimmer for aquariums up to a 200 gallons. All th e latest skimmer design innovations can be found on this RO-PS-2000INT model.

For aquariums up to 200 gallons

Pump: Bubble Blaster HY-2000 pinwheel pump—offers super efficiency and the very best in performance. The Bubble Blaster is designed to enhance filtration by employing the innovative pinwheel impeller which delivers more bubbles in greater volume with low energy consumption and heat emission.

Footprint: 12.6″ x 8.7″ | Body Diameter: 6″ | Height: 22″

Installation: Sump

Bubble Diffusing Chamber and Hybrid Cone Body that naturally reduces and stabilizes the foam production; This means less turbulence in the neck area and more contact time for organics to rise and collect

Oversized air silencer for quiet operation and airline mount

Large collection cup with flow directional guide, drain and unit venting

Precision control with the easy to turn output flow valve

Max injection venturi air injection system

Precision water level control output valve

Output Size: 40mm - Comes with metric to British adapter to 1.25”pvc

Output Height: 7.5″

Recommended Sump Water Depth: 6" to 6.5"

Solid acrylic construction