Installed for customer, easy install, took 2 hours including several up and downs to insure proper location and height . Yes this is a 2 man process, take the glass off to make is more manageable. Not keen on the plastic vent. Biggest issue NO operation instruction. I'm getting constant  calls now on how to operate the unit which seems to come on the first time then not the second. Is on a dedicated circuit with the stove only. After turning on stove, fan will not come back on, even after just turning it off.