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“ what does OP mean? ”

RELATED FAQS

Resolution: You would have to order the device as 88NL less trim, the device will be shipped as an 88EO. The EO device has the proper backplate equipped with an NL cam to accept a rim cylinder ...:

Where is the template for the 25C NL-OP?

Resolution: The NL-OP function for 25-C uses the 718C trim, so template T-2211 for metal doors and W-2211 for wood doors for 718 trims prior to 2/28/2011. T-2211 for trims prior to 2/28/2011 W-2211 for...:

How to order a 25-C device with the NL-OP trim function?

Resolution: Device would be ordered as a 25C-C as of June 2012.The C-C suffix designates the 25C will come with the 718C-C cylinder control which uses a 1-¼" mortise with a narrow straight cam:

Does Von Duprin offer an NL or NL-OP function with the 8827 exit device?

Resolution: This option is not available as there is no NL cam to directly drive the rods and using a key to lift the heavy stainless, brass or bronze rods would damage the key. :

Does Von Duprin supply the 9875, 9975, 9875-F and 9975-F mortise exit devices with NL-OP trim function?

Resolution: For night latch function with pull by others, the 98/99 series mortise exit device should be ordered as NL less trim, e.g., 9875NL-L/TRIM. We will furnish a device only, and the mortise cyl...: