COR coordinator with an overhead concealed closer

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The Dor-O-Matic overhead concealed manual door closers have been obsolete since 1999, and there are no parts available for them.
The LCN direct retrofit for the Obsolete 303 OHC closer was the 330 series, it was discontinued in 2009. The 3030 closer door closer body can be used as a replacement cylinder. 
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 is not a conflict between the 4041/4040XP EDA door closer and the GJ 100 or 410 overhead concealed series stops.  The exception is:  the 4041/4040XP mounted on a drop plate, and the Glynn Jo...
2030 and 5030 are both overhead concealed closers. The 2030 uses a concealed, in the door, track, and a concealed one piece arm. The 5030 uses a exposed double lever arm (like the arm for a 401...
The date is a 4 digit #. The first 2 numbers indicate the week it was made, and the last 2 numbers indicate what year it was made. On most surface mounted closers, the model #,  date code, ...
Overhead Concealed door closers are used to provide a more aesthetic look to the opening.  Concealed in either the frame or the door Offer the ability to be adjusted to maintain control o...
Concealed