D4990 Installation Adjustments


The D4990 installation on the push side of the door requires the Arm to be perpendicular to the wall. Shifting the boot to the right will cause the operator to not open the door all of the way. Please see the image below for detailed information on how to properly install it.  This information can be found on page 5 of the low energy catalog at:


On the pull side of the door, the installation will be as indicated in the image below.


Applies To

D4990 and D4990T

Additional Information 

For additional helpful installation tips, check out the articles below.

D4990 Low Energy Operator Initial Adjustments
D4990 Installation Guide


For more installation information on the D4990, check out this article in our Knowledge Base: D4990 Installation Instructions

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