[Code of Federal Regulations] [Title 16, Volume 2] [Revised as of January 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 16CFR1211.21] [Page 340] TITLE 16--COMMERCIAL PRACTICES CHAPTER II--CONSUMER PRODUCT SAFETY COMMISSION PART 1211--SAFETY STANDARD FOR AUTOMATIC RESIDENTIAL GARAGE DOOR OPERATORS--Table of Contents Subpart B--Certification Sec. 1211.21 Effective date. Under the Consumer Product Safety Act, automatic residential garage door operators must certify that they comply with requirements of subpart A of this part. This certification requirement is currently in effect. The specific labeling requirement of the certification rule in this subpart will become effective for any automatic residential garage door operator manufactured on or after January 21, 1993.