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The Norton 9540 Cast Iron door closers provide an ideal retrofit solution for retail, office,government and other commercial facilities. Certified to ANSI/BHMA Grade 1 requirementsfor long life and reliability, the 9540 is a direct replacement for LCN 4040 closers.Featuring a 25-year warranty, adjustable spring sizes 1-6, and Tri-Style packaging, thisheavy duty closer provides durability and strength for high traffic applications.