I forgot the dimensions and it's actually the dimensions that made me choose this skimmer when I bought it!
It's only 22 inches tall so can fit into many places other skimmers with that capacity can't fit.
That's possible due to the top down injection system. Bubbles are injected from the top down, travel down the inner chamber and then come back up the outer chamber for increased contact time.
The actual foot print in the sump is about 9" by 10.5"

All of the flexible tubing on this skimmer is silicone. The skimmer is ozone safe.