Thank you for bringing the issue to our attention. We apologize for the inconvenience. When installing a storm door, the storm door handle and the entry door handle are located on the same side. If the jamb depth measurements are less than those required to properly mount your storm door, then the storm door handle may interfere with the entry door handle. For proper handle set clearance between the storm door and entry door, the depth of the exterior jamb should be a minimum of 2-1/2 inch. - Irene