I love this gate, it is easy to use and the add-on panels fit it snugly in place.  I can flip the lock in place tab with one hand for easy coming and going.  I use it to keep my dogs off of carpeted areas in the house.  It expands best if you are able to turn both sides at the same time and I would recommend starting at the bottom.  My doorway has a 2 inch baseboard, similar to the one shown in the picture and it is a little hard to turn the expanding knobs in a tight corner with a high baseboard, but you just have to work at it a bit-I was able to do it without any tools.  It is sturdy and has held up well for the eight months I have used it.  If you do not get the locking tab clicked into place, your dog can push on it enough to open it.