If installing into a sliding door configuration, it's crucial to consider the clearance between the fixed and sliding panels. If a pet door is installed in one of the panels and the frame protrudes, it may interfere with the operation of the other sliding door. This is also to be considered if installing into hinged doors too, ensure there is enough clearance between the doors to allow for smooth operation if a pet door is installed.
Info: The 'Internal Frame' is typically the frame with the locks or flap. It will also be marked in the product instruction manual.
Deluxe Aluminium Pet Door
| Internal Frame | 19.5mm | 0.77" |
| External Frame | 8mm | 0.31" |
Super Tough Pet Door
| Internal Frame | 8.5mm | 0.33" |
| External Frame | 8mm | 0.31" |
Essential Pet Door
| Internal Frame | 13mm | 0.51" |
| External Frame | 13mm | 0.51" |
Ultra Clear
| Internal Frame | 30mm | 1.18" |
| External Frame | 20mm | 0.79" |
Cat Flap
| Internal Frame | 15mm | 0.59" |
| External Frame | 7mm | 0.28" |
Why are these measurements important?
When the sliding panel moves past the fixed panel (or vice versa), any part of the pet door that extends outward may come into contact with the other door. This can result in:
- Scratching or damage to the sliding panel
- Impaired sliding motion or jamming
- Long-term wear on both the door and the pet door frame
To avoid this, ensure that the gap between the two door panels is greater than the pet door's protrusion. If the clearance is less than this, alternative solutions may be needed, such as:
- Using a low-profile pet door
- Recessing the pet door into the panel (if possible)
- Adjusting the sliding track or panel spacing
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