The 62A shoe is used when it is necessary to install the door closer (lower) down on the door so that it will operate under accessories such as overhead stops, coordinators, etc.
There are 2 types of door coordinators available: Bar Coordinators (Ives COR Series): Surface mounted to the bottom surface of the frame soffit. The active door lever, located nearest to th...
The 571 strike is used on the in-active door leaf of a pair or on the 19-V door leaf when both doors are active per template.
No, the geometry of a swing clear hinge prevents the coordinator from working correctly.  The bar style coordinator will not hold the active door open far enough for the inactive door to clear the ...
For non fire rated doors only the 1609 strike would be used on the inactive leaf that is flush/surface bolted or with a *surface or concealed vertical rod device on other door leaf.
An Astragal is an applied molding attached most commonly to the meeting edge of doors to: Protection against weather conditions Minimize the passage of light between the doors Retard the passa...
Those holes are for mounting the coordinator mounting bracket itself.  The brackets must be drilled and tapped for the hardware you are mounting to them.