How Do I Install Mesh Patio Pet Door Extensions?

Short Answer

Top Extensions increase the overall height of the Mesh Patio Pet Door to suit taller sliding doors, while Bottom Extensions raise the flap entry height for larger pets. Both extensions attach using the supplied screws and can be installed at home in just a few minutes. 

Before You Start

• Place the pet door on a flat surface
• Make sure all parts are aligned before tightening screws
• Do not fully tighten screws until everything is correctly positioned

Installation guides and videos are available on the product page under the Installation section

Top Extension Not Sliding In?

If your top extension feels tight or won't slide into the frame, don't worry - this is the most common installation issue and is usually caused by alignment.

Before forcing the extension:

• Check the extension is perfectly aligned with the frame channel
• Ensure the top screws have been loosened sufficiently
• Start the extension evenly from both sides
• Slide it in gradually while keeping it square to the frame

The extension is intentionally manufactured with a tight fit to minimise movement once installed.

Watch the installation video below for a demonstration.

Installing Top Extensions (Adds Height)

Top extensions are used to increase the overall height of the pet door to fit taller sliding doors.

Steps:

1. Lay the pet door flat with the locking latches facing up
2. Loosen the two screws at the top of the frame (do not remove them)
3. Align the extension with the top channel of the frame
4. Carefully slide the extension into place
5. Insert and tighten the provided screws
6. Re-tighten the top frame screws to secure everything

Installing Bottom Extensions (Raises Flap Height)

Bottom extensions raise the height of the flap, making it easier for larger pets to use.

Steps:

1. Position the extension at the bottom of the pet door
2. Slide it into place
3. Secure using the provided screws

Important Considerations

• Top extensions increase overall door height
• Bottom extensions raise the flap entry height
• Always check your final height before installing

Because door sizes vary, customers should always measure their space before installing extensions.

Helpful Tip

If the top extension isn’t sliding in easily, it’s usually an alignment issue - not a defect. Taking a moment to realign the channel typically resolves it.

Related Articles

• How Do I Measure My Sliding Door for a Patio Pet Door?

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