[BlackTalon]

900 cfm is definietly on the low end if you will have a charbroiler. I think our Vent-A-Hood is 1,200 when both fans are on full. And frankly that doesn't do a great job sometimes, and all we have is regular burners (well, we have a grill pan too, and that makes the smoke detectors go off sometimes, even with a window cracked).