ok, I have no idea what kind of skimmer it it, but it works great.........I just ran out of room and had to get an in sump skimmer..........the powerhead is a penguin 660 still works but will probably need to be replaced eventually, the air pump is a aquaculture I might have run it 5 hours before deciding to invest in a new skimmer. the skimmer is 26 inches tall4 3/4 wide and 7 1/4 long, it can be used in sump or out, and it also needs valves, but you can get those at lowes, or homedepot for about 3 bucks each, all of it is $50 shipped