Overall a good product, but an important note
The flap is well made, and the closing mechanism is fairly quiet too. Installation was easy. But here's an important tip:
The instructions assume it never rains or gets stormy. That's not the case here. Before fitting the outer panel, you should definitely seal all around the cut-out in the door with silicone, otherwise when it rains, water will get into the wide gap between the outer panel and the tunnel and soak through the door from the inside!