I had EJ Medical Supply come out and install a stair glider for me, and they did a really good job! I told them exactly what I wanted, so they came out and measured, before coming back and installing the glider itself. It only took them forty-five minutes to put it in. After the install was complete, I also liked that they called back to see if I was satisfied with it. I never got that response from the guys that worked on my windows! I really appreciated that. I would definitely use them again.