I am a technical person and have assembled and installed many things, but I found this product very easy to assemble and install and we had it working in minutes after arrival. Well designed and it looks as if it was built in...very nice! WE have a dog and a cat, and they both had no issues on using the door within hours.

Easy to put together and install. I had to get thicker weather stripping to seal up our particular situation. My little Yorkie loves it!!! There is one screw hole that doesn't line up, but the other 3 hold it so well I just left it out. This panel does not look cheap.

This was very easy to install but never could get a seal, even with weather stripping between sliding glass door and dog door. 1/8-1/4" air space left for cold air or rain to come in. Took door down and not using it.

The door was very easy to assemble. However, I was disappointed that it didn't have a latch to lock into the frame of my sliding patio door. The only security is a pin which is used in the sliding glass door. The winter stripping does not really help keep any drafts out. I had a better seal on the door when I had not installed the unit. Gonna keep it for now. Already drilled the holes in the sliding glass door.

Love the dog door! The installation was easy the seal is good it's very sturdy I would rate the door a ten on the scale

The pet door arrived on time and in good shape . The pet door was easy to put together with the the easy to read assembly instructions. The package was missing the installation instructions, but we were able to install with out a hitch. All the parts were there. It would have been nice to have some bracket to lock the patio door against. There was a locking device that required drilling to accomplish the Mfr's lock, which was a draw-back. Otherwise it was good design. My 2 Yorkies learned to go in and out -- 1 right away and the other took a couple of days, They are used to it now with no more worry. I like the design -- it is narrow and the the glass allows light. The entrance flap is clear with a magnetic stopping function at the bottom, which keeps outside air from coming in. Al in all, I am very satisfied

The dog door was easy to install and took about 1 day for my Cocker Spaniel to learn how to use it. I purchased the medium size one. I would have liked to get the x-karge so my lab could use it too, but those are quite costly. Petco was the most reasonable though.

Installed the pet door but had to "customize" one item: I needed to add more weather stripping as what was provided was not thick enough to give a good seal when the patio door was brought-up to the pet door. Water would splash in via the gaps between the door and the pet door... and also between the top and bottom sections. I added some stripping on there too. By the way, it took one week for our female cat to "figure out" the flap. As of today, our male cat still hasn't figured out the flap (hey, it's not in our genes lol). So BE PATIENT and don't try to force your pets through the door. Let them discover this by themselves ;-)