Amazing product
I had the older version for years, but the motor died, I figured it would be a good time to upgrade, this is the same size and so fits the hole in the glass door perfectly. Helps keep other cats out and makes mine feel safer indoors, has also stopped my male cat spraying indoors too. This version is much better with the draught excluder and also the click isn't as noisy, not that it really bothered me before. This cat flap is well worth the money.