Earlier this week I shared photos of some delayed egress panic hardware that I saw on a college visit with my youngest daughter. I also saw this mullion with a key cylinder…is anyone familiar with the purpose of the cylinder?
You need to login or register to bookmark/favorite this content.
To prevent tampering
https://m.youtube.com/watch?v=s_hoDM-ktBg
Usually it is to remove the mullion. I do not know what that one is for unless it attached to a rod that secures the bottom of the door
Lori,
That looks like a Special-Lite SL-60 type keyed removable mullion. The cylinder controls a bolt that goes into the floor. The design allows you to offer the SL-60EK electrified version for electric strikes. I use them all the time, the EK option is amazing. https://special-lite.com/product/removable-mullions/
Bill
Perhaps the Mullion is removable and the cylinder actuates some type of latch.
Laura, I believe that is a Special-Lite KR mullion.
Typically those are used on removable mullions. They are usually located at the bottom of the door, so just making a guess.
WSU uses Keyed mullions are to prevent unauthorized individuals from removing them and consequently replacing it incorrectly which leads to an unsecured opening.
That is a Special-Lite key removable mullion (adams rite innards)
ADA compliant KR mullion? 🙂 I don’t actually know, but if that was the case, and some MFG came up with that to help vertically challenged people like me, that would be pretty cool!
Prevents unauthorized removal of the mullion. I saw them get removed and not put back, leaving the building unsecured. Heard that one had even been lost.
Removable mullion locked in place by the cylinder maybe?
On our campus, we have keyways on some of our mullions (though closer to the top) to toggle them for removal on a fitness center. The staff occasionally need the full width of the doorway to move equipment in and out. Could this be something similar?
Side note: We never received a satisfactory answer from the architects on why they specified a removable mullion and rim exit devices instead of concealed vertical rods in new construction.
I am not sure where you are located but I personally would rather use a KR mullion over a CVR device because of long term maintenance. Here in Chicago, we get very liberal applications of salt in the wintertime. This gets into the workings of the CVR and makes them need annual maintenance. A rim panic latching to a mullion needs little to no maintenance.