Durable and Quality - Garage door reinforcement bracket is made of galvanized steel, sturdy and rust-proof, which makes it last much longer than others. Adjustment Length - Garage Door Opener Reinforcement Bracket has different holes at the top and bottom to ensure a tight connection to the garage door. Adjustable to 18", 21" or 24", easy to install. Features of Garage Door Bracket - The garage opener door adjustable reinforcement bracket allows the garage door to open and close. Put the two units together to make one extended bracket. Garage Door Hardware Wide Application - Adjustable garage door bracket can be easily mounted on residential and commercial doors and is suitable for most garage door openers. What You Get - Set includes 1 garage opener adjustable brackets with mounting hardware and with a piece adjustable design.