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“ advance variable backcheck ”

Resolution: AVB stands for Advanced Variable Backcheck. It is a cylinder option when ordering, that allows backcheck to start at about 45 degrees instead of the normal 75 degrees. 4110, 4210...:

ADVANCED VARIABLE BACKCHECK CYLINDER

Resolution: AVB, Cylinder Function, 4110 Series Closer:

Which closer should I use for a "High Wind" condition?

Resolution: A 4110 with AVB (advance variable back check) would be recommended. Using a SCUSH (Spring Cush) arm will also help minimize shock to all door hardware.:

What is the part number for a standard Y latch?

Resolution: The latches for the Y and F lock are not interchangeable as the hole sizes are different. Substituting any latch voids your UL and product warranty. :

AVB

Resolution: Advanced Variable Backcheck:

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