The black backing paper that goes behind the lense.
OER Heater Control Lens Without A/C For 1967 Firebird and Camaro Models
NEW 65-66 Impala NON-AC HEATER CONTROL LENS Heat Climate Bel Air Chevy 1665 1966
NEW 74-82 Chevy GMC Truck NON-AC Heater Control LENS BACKING AC Pickup Full-Size
NEW 77-79 Firebird A/C Heater Control LENS AC Trans Am Formula Temp Climate Air
NEW 71-74 Caprice Impala A/C Heater Control LENS 72 76 Backing Paper AC
Heater Control Lens Face & Backing Plate Standard Interior 1955-1959 GMC Truck
