21 Garage Door Operator Reinforcement Bracket by National;

The Clopay Opener Reinforcement Bracket Kit helps reinforce your garage door when attaching a garage door opener. Proper top section reinforcement is required when attaching a garage door opener to your garage door. This steel bracket provides the proper reinforcement to the top sections and are adjustable for compatibility with most garage door openers.Made from galvanized steel for durability and rust resistanceFor use on 21 in. high gaarage door top sections onlyEasily installed with common household toolsCreates a solid connection point for the garage door opener