I went to the site not knowing anything about stair lift chairs. Michael Noneman was extremely knowledgeable in the industry and extremely helpful in directing me to the chair that best fit the needs of my parents in their home. I am a general contractor so I decided to self-installed the system and everything went smooth. I could not be more happy with how simplified the website is for explaining how to measure the staircase in order to properly order the chair system. Overall I would highly recommend US Medical Supplies to anyone!