Door coordinators are used to control the closing sequence of a pair of doors when both leaves are furnished with latching hardware and one leaf latches into the other of has an overlapping astragal. Typically, these openings will have a vertical rod exit device or automatic flush bolts installed on

The door scheduling is suitable to the design which is belong to designer. The designers must have concept of design, and then find the door hardwares which meet the design's requirement of designers.