Garage Door Opener Adjustable Reinforcement Bracket - Fits 18"- 21"-24" Sections FREE SHIPPINGSuitable for Residential & Commercial Doors Adjustable for 18" to 24" section heights 2 - Piece Adjustable Design 12 gauge zinc plated steel 1-5/8" Wide Profile Flanged Ends Eliminates garage door arm hook up bracket Mounts to center of top section to help eliminate steel doors from cracking WARNING:All products are sold subject to the following Warnings and Cautions and with the express understanding that the purchaser and/or user are thoroughly familiar with their proper use. We assumes no responsibility for the use, misuse or misapplication of its products.Garage Door Cables, Springs, and attachments are under significant load and installations, adjustments and replacements should