Gas Furnace; Type ECM Blower, Extra AFUE Efficiency, Multi-Position, Mainline; Btu per Hour 40000; Capacity 1000 CFM at 0.5 Inch WC (Cooling); Control Type 24 Volt AC/40 Volt Amp Transformer; Size 14-3/16 Inch Width x 29-1/2 Inch Depth x 35 Inch Height; Gas Inlet Size 1/2 Inch Threaded; Inclusion/Features 24 Volt AC Humidifier Terminal, Extra SEER ECM Blower Motor, Stainless Steel Secondary Heat Exchanger, Direct Ignition with Silicon Nitride Igniter, Corrosion Resistant, Prepainted Steel Cabinet, Innovative Knob, Concentric Vent, Self Diagnostic with Super Bright LED, Slide Out Heat Exchanger and Blower Assembly; Gas Type Natural; Gas Efficiency 96 Percent AFUE; Number of Speed 5; Input Supply Rating 115 Volt AC at 60 Hertz 1-Phase; Motor Current Rating 6.8 Amp (Full Load); Motor Power Rating 1/2 HP (Direct Drive Motor); Motor Speed Rating 600 to 1200 RPM; Cabinet Material Pre-Painted Steel; Approval CSA; Applicable Standard AHRI