Product Details

The Copper Lock Door is a cast hardened aluminum replacement door for your street light transformer base or hand hole that has an integrated locking mechanism to help prevent theft. We utilize a separate unique locking bolt to secure the sliding plate and help prevent the unwanted removal of the door.

No modifications are required to make the Copper Lock Door fit securely to the existing transformer base. This patent pending product is designed to fit the transformer base on most street light poles. Refer to the product listing below for available sizes. If the size needed isn’t currently available, custom and nonstandard sizes can be cast to meet your needs.

Simple Installation

Place door in existing opening, raise the locking arm and secure with the locking bolt.

Our Key

The key to the locking bolt cannot be duplicated and is not available to the public. All keys must be ordered through Copper Protection and distribution is tightly controlled.


Solid cast hardened aluminum construction provides superior strength

Anodized to resist corrosion

Machined steel locking bolt with proprietary key to help prevent unwanted removal

Explore 360° View

Download one of the interactive PDFs below to explore the Copper Lock Door’s functionality. The Transformer Assembly PDF illustrates the Copper Lock Door’s installation on a transformer base. The Copper Lock Door Mechanism PDF provides an in-depth view of the door’s mechanics and assembly.

Once the PDF has downloaded to your computer, open it in Adobe Acrobat Reader. Click and hold your mouse button, then move your mouse to change the view. The PDF may not function within your browser window and should be viewed with Acrobat Reader or another Adobe Acrobat software.

Transformer Assembly
Copper Lock Door Mechanism

Product FAQ

Q: Can the screw be easily drilled out? 

A: “Our tests found it very difficult.” To read more, click here.

Q: How does your screw fasten more securely than a lock washer?

A: “Using Raptor Claw Tooth Security, these fasteners are the most secure on the planet.” Read more details about the Raptor Claw here.

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