1601BF & 1601DA Door Closers Discontinued Effective immediately, Norton Door Controls will discontinue the 1601BF and 1601DA door closers. In lieu of the 1601BF, order the 1601 which features a 1-6 spring and complies with the Americas with Disabilities Act (A.D.A.). The discontinuance schedule for the 1601BF and 1601DA is as follows: End of Sales Orders for 1601BF closers received after November 21, 2016 will be entered as the new 1601 size 1-6 closer Orders for 1601DA closers will not be accepted after November 30, 2016 If delayed action functionality is required, please consider using Norton's 8501DA closer End of Support Factory Technical Support will be available through the warranty period, December 1, 2031. Questions? Contact your ASSA ABLOY Door Security Solutions sales consultant.