not only does the larger diameter hold more evenly away from the spacer circle in the double glazed glass, but the the integral gasket also mounts that much more securely than the standard body mount. I carefully measured up before replacing the old door flap and worked out I didn't need the adaptor. I was wrong. It did 'fit', but with absolutely no wiggle room and the stress was all on two points of the glass spacer, not spread out in the glass.
Verified purchase: Yes | Condition: New
When I moved into a modern house, I thought it would be impossible to fit a cat flap into the large double glazed french windows. This adapter was all it took to enable my glazier to replace one entire window with a new one with a sealed circular hole ready to fit the cat flap. The whole thing works incredibly well.
Verified purchase: Yes | Condition: New
Neatly covered over the hole chiselled through the bricks. Very professional finish
Verified purchase: Yes | Condition: New
Very happy with this, so is the cat
Verified purchase: Yes | Condition: New
It's not a cat flap it's only an accessory
Verified purchase: Yes | Condition: New
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