Bulldog High Security Garage Door Lock Roller Shutter Heavy Duty Locking GD400 This Bulldog High Security Garage Door Roller Shutter Lock is an excellent way to enhance the security of your existing garage door. It features a reinforced "L shape" design and can be securely bolted to either the inside or outside of the garage door. This lock does not require any separate padlocks, as it incorporates Bulldog's Super Lock Bolt for increased security. The lock is finished with a high-quality yellow powder coating for enhanced visibility. Features: - Essential for garage doors - Reinforced L-shaped bracket - Bracket dimensions: 142H x 75W x 86D - Bracket thickness: 6mm - Ground tube dimensions: 105H x 60 Diam - Hardened steel lock bolt: 25mm Diam - Supplied with coach bolts and reinforcing plate - Weight: 3.0 Pounds - Manufacturer: Bulldog