Our DC250 mullion is easy install. This door hardware product is used on double doors when inactive door needs to close before active door.

• Angle type coordinator
• In the case of a fire breaking out, even if the door which should close afterwards, begins to close first, it will be held back by the regulator until the other door has closed. Then, the lever of the regulator will disengage, permitting the remaining door to close and thus the function of the fire door will be completely fulfilled.

1 Pcs.