For solid Panel doors only Interior B will be made if not specified

interior | A for doors 56, 66

interior | B for doors  50, 60, 63, 65, 70, 75, 80, 85, 90

interior | C for doors 50, 60, 63, 65

interior | D for doors 30, 50, 60, 63, 65

interior | M for doors  50, 60, 63, 65

interior | P for doors  50, 60, 63, 65

interior | S for doors  50, 60, 63, 65

interior | T for doors 30, 50, 60, 63, 65

interior | U