20kW to 29kW 30kW to 39kW 40kW to 49kW 50kW to 59kW 60kW to 69kW 70kW to 79kW 80kW to 89kW 90kW to 99kW 100kW to 150kW Commercial By Gas TypeThis is often due mostly to the dual-axis monitoring functionality, but there's also purely natural cooling ventilation from staying nine feet off the bottom versus mounted with a roof that collects heat