Freezer Frame-Drain Heater (532, 590)
  532     Prior to #M/P1004775 except between
          #M964770-M965069 & #M990700-M990999,
          Part is NLA.
          Starting with #M/P1004775 and between
          #M964770-M965069 & #M990700-M990999
          see 4201780. If just the drain pan & pan
          heater are needed see 4201000
  590     Prior to #M1004775 except between
          #M965870-M966269 Part is NLA.
          Starting With #M1004775 And Between
          #M965870-M966269 See 4201780.
          If Just The Drain Pan & Pan Heater Are
          See 4201000