The Cat Flap Pet Door is designed for installation into doors, walls, and screen doors with a thickness of 0–50mm (0–1.9 inches).
It is not suitable for installation into thicker doors, walls, or panels, and there is currently no tunnel extension kit available for this model.
For installations involving thicker materials, we recommend:
Consulting a qualified tradesperson for a custom installation solution, or
Considering alternative models better suited for heavy-duty use, such as the Hakuna Pets Deluxe Aluminium Pet Door or Hakuna Pets Super Tough Pet Door.
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