Depending on the application, there are two types of blocking rings offered for mortise cylinders- One for use with a compression ring, and one for use without. When a compression ring is u...
After selecting the correct blocking ring, specify the thickness. The table below shows the different thicknesses that the rings are offered in.
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The rim cylinder with thumbturn, XB11-979 (Figure 1) was designed to be installed on the inside head of the Von Duprin 98/99–2 double cylinder exit devices, see Figure 1. The rim cylinder with...
The device is not available with cylinder dogging, but the outside cylinder assembly on the pull side of the door can be set for a hold back function (instead of nightlatch function), which essenti...