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Bulldog Garage Door Security Defender - GD20

Bulldog Garage Door Security Defender - GD20

This Bulldog GD20 Surface Mounted Garage Door Lock is a simple and effective solution to secure yo...

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eBayBulldog GD20 Garage Door Lock Defender Heavy Duty Security With Padlock
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B&QB&Q - Gd20 Up & Over Garage Door Security Defender Lock Heavy Duty & Padlock
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Product Information

Full details

This guide is for homeowners seeking to enhance their garage security with the Bulldog GD20. The GD20 offers a straightforward, surface-mounted security solution, providing a visual deterrent and physical barrier against unauthorized access. A key consideration is that installation requires no drilling into the garage door itself, but you'll need to supply your own screws. This guide will walk you through the key features, benefits, and usage of the GD20.

All features

ColourRed
Model Part NumberGD20
BrandBulldog

Extended Product Information

FAQs

What is included in the package?

The package includes the GD20 unit and a 70mm stainless steel padlock.

Do I need to drill into my garage door?

No, the GD20 mounts to the door frame and does not require drilling into the garage door itself.

What tools do I need for installation?

You will need a screwdriver or drill, a measuring tape, and the appropriate screws for your garage door frame material.

What are the dimensions of the GD20?

The GD20 is 161mm wide, 170mm long, with a baseplate of 235mm x 80mm, and the padlock eye dimension is 15mm.

What type of padlock is included?

A 70mm stainless steel padlock is included.

How do I maintain the GD20?

Regularly check the unit and padlock for any signs of wear or damage, and lubricate the padlock mechanism.

Where can I purchase replacement parts?

Replacement parts can be acquired from Bulldog's website or authorized retailers.

Troubleshooting

Padlock is difficult to open or close.

Lubricate the padlock mechanism with a suitable lubricant.

GD20 feels loose after installation.

Tighten the screws securing the GD20 to the frame. Consider using longer screws if needed.

Locking mechanism seems stiff.

Ensure the GD20 is correctly aligned. Check for any obstructions.

Pros and Cons

Pros

  • Simple and effective security solution.
  • Easy installation – no drilling into the garage door.
  • Highly visible deterrent.
  • Includes a robust padlock.
  • Durable, weather-resistant construction.

Cons

  • Requires user-supplied screws for installation.
  • Padlock is exposed and vulnerable if not hardened.
  • Surface mount may not be suitable for all garage door types or frames.
  • Requires regular checks to ensure secure locking.

Setup, Compatibility & Care

  1. Installation: The GD20 mounts on the garage door frame. Ensure you have the correct screws (not included) for your frame material.
  2. Compatibility: The GD20 is compatible with most standard garage door frames. It is not compatible with garage doors with very narrow or unusual frame designs.
  3. Care: Regularly check the padlock and the mounting plate for any signs of wear or damage. Lubricate the padlock mechanism periodically to prevent corrosion. Clean the GD20 with a damp cloth as needed.

Installation steps

  1. Position the GD20 on the garage door frame where the door closes.
  2. Mark the screw holes.
  3. Drill pilot holes if necessary.
  4. Secure the GD20 with appropriate screws.
  5. Insert the padlock and test the locking mechanism.

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