80% 2 Stage 75K Upflow/Horiz Up to 5 Ton Vari SPD 21W Low Nox Eco Com
80% 2 Stage 75K Upflow/Horiz Up to 5 Ton Vari Spd 21W Eco Com
80% 75K Input 2 Stage Variable Speed Up/Horiz 3 Ton Drive 21W Furnace EcoNet
80% 75K Input 2 Stage Variable Speed Downflow 4 Ton Drive 21W Furnace EcoNet
80% 75K Input 2 Stg Vari Spd Downflow 4 Ton Drive 21W Low NOx Furnace EcoNet
80% 2 Stage 75K Downflow Up To 5 Ton Vari SPD 21W Low Nox Eco Com
80% 2 Stage 75K Downflow Up To 5 Ton Vari SPD 21W Eco Com