(a) A manufacturer selling or offering for sale in the United States an automatic residential garage door operator manufactured on or after January 1, 1991, shall clearly identify on any container of the system and on the system the month or week and year the system was manufactured and its conformance with the requirements of this part.

(b) The display of the UL logo or listing mark, and compliance with the date marking requirements stated in § 1211.18 of this subpart, on both the container and the system, shall satisfy the requirements of this subpart.