The Adams Rite Metal End Cap is for the hinge side of the door and replaces the plastic version (25-0471). This cap can be used on the 3100, 3300, 3600, 3700, 3900, 8100, 8200, 8300, 8400, 8500, 8600, 8700, 8800 and 8900. We find the number 23-0600 cast in to the end cap.
Adams Rite 41-0902-04-IP Metal End Cap Assembly is used on the 3100, 8100, and 8200 which are their Surface Vertical Rod devices. Replaces the 41-0901-04, which is the plastic version. We find the number 23-0601 cast into the cap.
Adams Rite New Style end cap for the 8700 and 8800. The black cap measures 2-3/8" high x 1-1/2" wide x 1-1/4" projection. We some times find the number 25-0674-01 cast in the black plastic.