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Garage Door Opener Reinforcement Support Bracket for Steel Garage Doors. 18, 21 and 24 inch.Proper Bracket for Garage Doors. - Amazon.com
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Heavy Duty Garage Door Reinforcement Bracket Kit for 8FT Garage Door - Adds Strength and Rigidity Increasing The Overall Life of Your Garage Door - Amazon.com
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DURA-LIFT Punched angle iron 4-Pack Silver 14-Gauge Steel Garage Door Bracket in the Garage Door Parts & Hardware department at Lowes.com
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