Super Reef Octopus SRO-5000 INT, http://www.coralvue.com/reef-octopus...rotein-skimmer, with vent. The skimmer and pump are in good condition. The vent is an additional accessory that makes the skimmer much quieter. I have the original packaging, so it shouldn't be a problem shipping it. $400 for the skimmer, pump and vent.