The J-arm mount is adjustable and can be mounted on vertical, horizontal, and slanted exterior surfaces.
The mount is attached using the four-roof mount lag screw in the corners of the base.
NOTE: Using a longer J-arm to extend the FW2000e higher may require struts attached to the J-arm to increase stability. You may need to use longer lag screws for the mount and ensure it is attached to a structural element such a wall stud.