MODEL: TO30SS-6 TORNADO 30” STAINLESS STEEL 6 SPEED, AUTO CLEAN RANGE HOOD Regular use of the Auto-Clean function can virtually eliminate cooking odors from your kitchen! Simply press the Auto-Clean button and it automatically cleans the entire cooking fume passage in less than a minute while the residual grease is removed, making your kitchen fresh and inviting. No need to dismantle the range hood and no need to scrub. 1. Professional Heavy-Duty Range Hood for the Serious Cook 2. Exhaust Duct Only 3.