Perfect fit. Battery operated not mains so another plus. Very fair price. Quick delivery. I have waited some weeks before my review as I wanted to make sure that my cat could actually use It properly . Going out no problem. Coming in has taken time but he is now confident enough to wait for the flap to register his chip. He was very unhappy before as another cat had been coming in the manual one. So we were desperate to fit a microchip flap that could just fit into the old space.After much research we found Petsafe PPA19.Will probably order a spare in case they are discontinued.