Freezer Frame-Drain Heater (550)
          Prior to #M/P1004775 except between
          #M964070-M964469 & #M984750-M985149 This
          Part is NLA.
          Starting with #M/P1004775 and between
          #M964070-M964469 & #M984750-M985149
          see 4201800. If just the drain pan & pan
          heater are needed see 42010000