Adams Rite 3889-08 Removable Mullion for doors up to 8', for 8700, 3700 Exit Devices
The 3889 Removable Mullion Allows the use of rim exit devices on paired doors without narrowing the doors.
Provides higher security and better traffic flow than paired doors with vertical rod exit devices.
The 3889 is used for fire-rated applications or with non-rated devices on wood or hollow metal doors.
Available in primer only.