Ever tried to Attach a Closer Arm to a thin Metal Frame that has NO Reinforcement inside ? The Closer arm cannot attach securely and will pull away from the frame. When there is NO re-inforcement INSIDE the FRAME , support has to come from the OUTSIDE. This JDT Closer Arm Support Plate is designed to give you the SUPPORT you need. The Support Plate comes with a Peel & Stick ULTRA HIGH BOND Adhesive for METAL applications. Just Peel & Stick then Secure into place with Screws Provided. Now Drill and Attach Closer arm as normal. DONE !! Comes with Self-Drillling Screws for Support Plate and Self Drilling Screws for Closer Arm. (2) SIZES AVAILABLE. CHOOSE 1-1/2" x 6" plate FOR 1-1/2" FRAME STOP ..or....2"x 6"plate FOR 2" FRAME STOP. (2) Finishes Available: Primed for PAINT(flat grey) or LCN (Aluminum Finish)