Easy to install, fit great. Took longer to get out of the box, than to install it.

Not as described on the website. I specifically picked this one for the hardware that was supposed to allow me to lock the sliding glass door to the pet patio door. Instructions were placed in the wrong order. It had me lock the height into place with screws before Installing brackets in the sliding glass door frame, making it almost impossible to slide the door back into place over top of the brackets. Top of pet patio door was already bent upon receipt. Does not install onto every sliding glass door well. My sliding glass door does not have a track at the top, so if it wasn't for the bracket weakly holding it into place with one maybe 1/4-1-2 inch screw, the patio door would slide back and forth on the top of the frame. With the bracket in place it does not sit flush with the slider door and the bottom bracket is too wide to be flush with the door because the track limits where it can sit. So the bottom bracket has a gap between itself and the door it screws in to. It also does not sit flush with the door jamb and I can see light through to the outside. The website states that it comes with hardware to lock your sliding glass door to your pet patio door but it does not. It comes only with a lock that can be installed against the stationary part of your slider to keep your sliding glass door from sliding open or closed. Unfortunately that is not the right size either and does not reach from the sliding glass door to the stationary part of my slider. So I got done installing it only to find out that I could not secure my sliding glass door at all. I then had to quickly find something approximately 24 inches in length to temporarily secure the door so that I could go to sleep that night. Not at all what I expected and I do not feel like it will keep out intruders or insects. Still trying to find a fix to make it safe enough to leave it in place.

With slider installed on door track, unable to lock sliding door. Have to place PVC pipe in the track to prevent it being opened. Company's solution for a lock is subpar. Wish dog door fit in the track of the screen, then I could still close and lock it.

This is one of the best purchases I have made. It is installed in the sliding glass doors in the sunroom. I had it installed for me and the installer was impressed with the pet door. There is a slight gap between the sliding door and the pet door, but that is because the sliding door is not straight. I have no complaint about that because it is an improvement over leaving the sliding door open or constantly having to open the sliding door for my dog to go out. Although I have a small dog, I purchased the extra large to accommodate larger visiting dogs. Training dogs to use the pet door takes time, especially if the dog has never used a dog door before. It took about a week before my neighbor's 12 year old dog felt comfortable using the new door. It has worked so well, my neighbor is getting a pet door for the sliding doors at her house.