For a new build or renovation, we have you covered.. when it comes to Doors, Moulding and Stairs DMS Supply is the right choice for you. We have a highly skilled team of experienced staff and our goal is to achieve complete customer satisfaction by always delivering quality products & services. We not only do Doors, Moulding & Stairs but we can assist you with windows from Cascade windows & Alside as well. Across the state of Washington, we cater to the needs of both residential and commercial clients. With our professional staff, we have over 100 years of experience which makes us the company you can trust.