Condenser removes steam exhaust. Catalyst removes smoke and fumes. No filters to change. Integrated hood - no fire suppression required. Top clearance required Zero inches! Door is not on timed lock (unlike the competition). The BLCT touchscreen control can store up to 500 recipe programs with 15 cooking steps per program. Cook the way you want - Blodgett lets you choose which kind of chef you want to be. You can cook manually and easily and easily fine-tune your settings. Use pre-programmed recipes to ensure consistent,results every time. Or use the SmartChef feature which automatically selects the optimum settings for an effortless cooking process. Rack timing allows for setting individual timers for each rack. Reversible 9-speed fan for optimum baking and roasting results. Warranty: 1-year parts and labor