First, let me say that this is the best-built pet door that I've seen in a long time. It is a heavy vinyl clad construction, and the pet door is three piece self-sealing with no air leakage.

But I think the design of much of the latching hardware is cheap. I ended up using the original latch, along with a homemade shim to get it mounted properly. The ones supplied are made of plastic and will not stand up over time. The same goes for the spacers supplied for larger openings. I had to fill them with Great Stuff in order to get some insulation in there. They are made of plastic sheeting.

Installation instructions could be much better written. The steps are out of order - I recommend you read through ALL of the instructions before trying to install this. Otherwise, you'll find yourself removing it several times in the process.

Overall, I like the door. With some extra work on my part it is working well for us. It would have gotten a higher rating but for the items I listed.
<span style="color: rgb(255, 0, 0);"><span style="font-weight: bold;">MPS Reply: </span> Thanks for the input...will provide feedback to manufacturer...let us know if we can help!
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After much debate, and calling Moore Pet Supplies multiple times I was able to decide on the VIP patio panel. I was at first concerned b/c I don't have a Vinyl slider, but this door fit anyway and is very heavy duty. The only thing I don't particularly like is the flap on the door. I would have rather it had a regular flap, and not this rigid, segmented flap, but my dog and cats have been able to use it pretty easily.