It's a Laguna and the motor is rated at 12 amps at 240V. The input port on the Laguna is 6". I don't know the impeller size but you can look up the Laguna. It's a permanent installation with S&D 6" pipe running to the tools. Most are stepped down to 4" to match the port on the tool. I put the SSD XL in front of the Laguna because the Laguna cyclone was miserable and too much swarf and fines wound up in the filter. The SDD XL made a significant improvement in swarf and fines capture.
By "works fine" I mean that it collects swarf off my tools in an acceptable manner. Don't know what else to say.
Mike