The MK2 Door Coordinator, also known as a selector, ensures that a pair of double doors will always shut in the correct sequence regardless of which door is opened first. If the double doors do not shut in the correct sequence they will not close in the middle. The MK2 can be used on timber/metal/steel fire and non-fire regulated door sets.

The types of doors MK2s are specified on are:
Fire regulated and non-fire regulated door sets • Rebated Doors • Flush doors with security astragals • Escape doors with a vertical rod device and horizonal rim exit device • Flush doors that are used with a mortice lock/latch • Flush doors with automatic flush bolts

All standard MK2 Door Coordinators include:
Body with detatchable 102mm arm (longer arms available) • Standard surface mounted rebate catch • Lift Arm • Impact plates and fixing screws • Full fixing instructions