What items are needed to add cylinder operation to a 1590 device?

A 159 cylinder assembly and a 1590 device retractor are needed to convert a 1590 to a 1592 (cylinder operation). 

When ordering 159 cylinder assembly, specify:
1. NL (night latch) or HB (hold back) function
2. door thickness
3. finish
4. 7-pin cylinder, if you are using one
5. optional conventional rim cylinder, if required

When ordering 1590 device retractor, specify:
1. door thickness
2. single door, or double door with mullion


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