48FCTN28A6A5-3X2C0
48FC = Gas Heat Packaged Rooftop
T = High Heat with SS HTEX
N = Single Circuit Two Stage Cooling Models with Humidimizer
28 = 25 Tons
A = No Smoke or CO₂ Sensor
6 = High Static Motor - Vertical Supply and Filter Status Switch
A = Al/Cu - Al/Cu 
5 = 208/230-3-60
3 = SystemVu™ Controller
X = ULTRA Low Leak Enthalpy Economizer with PE (cent) Vert Only
2 = Powered Convenience Outlet
C = Non-Fused Disconnect
0 = Standard Packaging