Quick comparison
| Model | Best for | Glass fitting notes |
|---|---|---|
| SureFlap Microchip Cat Flap | Simple selective entry for standard-size cats | Sure Petcare supports glass installation. Its current support page lists an optimum circular glass hole of 212mm and states it can fit holes up to 260mm. |
| SureFlap DualScan Microchip Cat Flap | Multi-cat homes where different cats need different exit permissions | Glass installation is supported and the current support page also lists a 212mm optimum circular hole, up to 260mm. |
| PetSafe Microchip Cat Flap | Straightforward microchip entry with a manual 4-way lock | PetSafe states that a Microchip Installation Adaptor is required for glass installation. Check the current fitting template before glass manufacture. |
| Cat Mate 360 Microchip Cat Flap | Multi-cat homes needing a simple microchip flap and 4-way manual lock | Closer Pets states that glass installation requires its Cat Flap Adapter Kit for Walls and Glass Panels. |
| Cat Mate Elite 355W | Owners wanting microchip access plus timer control and a larger external frame | Closer Pets states that it can be fitted directly into single or multiple glazing and lists a 232mm circular cut-out. |
1. SureFlap Microchip Cat Flap
This is a strong choice if you mainly want to keep unwanted cats out without needing individual exit rules. Sure Petcare describes it as selective entry: registered pets can enter, while any cat can leave. For glass mounting, Sure Petcare's current UK support information gives an optimum circular hole of 212mm, with compatibility up to 260mm.
Official Sure Petcare support & dimensions
2. SureFlap DualScan Microchip Cat Flap
DualScan is more useful when you have several cats and want different exit permissions. Sure Petcare explains that DualScan can keep selected cats indoors while allowing others to come and go. Its current support page gives the same 212mm optimum glass hole and support up to 260mm.
Official DualScan support & dimensions
3. PetSafe Microchip Cat Flap
PetSafe's current UK model offers selective microchip entry, a manual 4-way lock and programming for multiple cats. For glass installation, PetSafe specifies a separate Microchip Installation Adaptor, so the exact current template and adaptor need to be checked before the glass is ordered.
4. Cat Mate 360 Microchip Cat Flap
The Cat Mate 360 is another practical option for small to average-sized cats. Closer Pets states that it can be used in single or multiple glazing but requires the Cat Flap Adapter Kit for Walls and Glass Panels for a glass installation. It can register multiple cats and also includes a manual 4-way lock.
Official Closer Pets product page
5. Cat Mate Elite 355W
This model is worth considering if timer control matters. Closer Pets currently lists it as suitable for single or multiple glazing and says it does not require a separate glass adaptor. Its published glass cut-out diameter is 232mm, so the glass should be manufactured specifically for that model.
Official Closer Pets product page
Which one should you choose?
If you only need selective entry, the standard SureFlap or Cat Mate 360 may be enough. If different cats need different exit permissions, DualScan is the more relevant SureFlap option. If timer control is important, the Cat Mate Elite 355W is worth comparing. If you already own a PetSafe unit, glass installation is possible with the correct adaptor and current cut-out template.
Why glass installation needs planning
Most toughened and sealed double-glazed units cannot simply be drilled after manufacture. The chosen pet flap determines the opening required, so the safest workflow is: choose the model, confirm the cut-out, measure the existing glass, order the new pane or sealed unit, then fit the glass and cat flap.
Read our guides on cat flaps in toughened glass and cat flaps in double glazing.
How much does fitting cost?
M25 Glazing offers suitable straightforward pet-flap installations from £95. Glass and double glazing are quoted separately because a new made-to-measure pane or sealed unit is normally required.
See our cat flap installation cost guide or our main Cat Flap & Dog Flap Installation London page.
Frequently asked questions
Do I need a special adaptor for a microchip cat flap in glass?
It depends on the model. Some products require a specific glass mounting adaptor while others can fit directly into a suitable pre-cut glass opening. Check the exact model instructions first.
Can I change the cat flap model after the glass has been made?
Only if the new model is compatible with the existing hole size and mounting arrangement. Because cut-outs differ, it is much better to choose the final model before manufacture.
Can you fit a microchip cat flap into double glazing?
Yes. A new sealed unit with the correct factory-prepared opening is normally required.
Can I supply my own cat flap?
Yes. Send us the make/model, photos of the door or glass and your postcode so we can check the installation route.
Need help choosing or fitting a microchip cat flap?
Send us the model you are considering, a photo of the whole glass or door and your postcode. We can advise on the fitting route and quote the work.