Cr441 series ansi 156 4 grade 1 full cover multi size full feature closer ul listed conforms to standards ul10c and ubc7 2 1997 bhma certified lifetime warranty reduced opening force cr441 door closers important any door closer including those certified by bhma to conform to ansi. The cr441 is grade 1 ansi certified and has several important features you will want to be aware of when choosing a closer. Heavy duty double lever arm with extra smooth action full feature multi size commercial door closer for use in office buildings shopping centers and other commercial buildings. 
				
			
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