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The Dor-o-Matic 1990 Housing and 1090 2090 Inactive Housing DCX has been around since the early 1970's.  Although it is now called a Falcon 1990, it is still the same device.  This housing is also the inactive housing on the Dor-O-Matic / Falcon 1090 and 2090 panic hardware.  The housing includes all of the interior springs, arm, and dogging screw.  Housing measures 7-1/2" long by 1-3/16" wide.  The center to center distance of the mounting studs is 6-1/4".

LEFT HAND SHOWN IN PICTURE

See diagrams for handing.

Doromatic part #
4270902784 - right hand dark brown
4270902782 - right hand aluminum
4270902785 -right hand black
4270902778- left hand dark brown
4270902776 - left hand aluminum
4270902779- left hand black

1990 parts breakdown

2090 parts breakdown