Interstate Door Sales, Inc, a Northern California distributor of commercial & institutional doors, frames, and hardware, is comprised of a team of experts who have the common goal of lending their expertise to every project by providing solid solutions for even the most complex of door openings. We have built relationships with architects and general contractors who have come to rely on our ability to not only meet their clients needs for life-safety and security, but to also integrate design in every project we do. Our close connection with the design community and building owners lends us a unique perspective where we often find ourselves at the forefront of new product development. While we have a strong reputation in standard doors, frames, and hardware, it is our unsurpassed experience designing Integrated Door Assemblies that has gained us significant industry recognition. We are known for taking on the most challenging openings and projects, whether the project involves just a single opening or an entire door, frame, hardware, and installation package. Our knowledge of the code is a tremendous asset on issues of ADA, fire-safety, and OSHPD compliance. Our design solutions for hold open fire door assemblies and hospital cross corridor doors have been widely accepted on projects reaching far from our Northern California operation. We encourage you to review this website and use us as a technical resource for your upcoming projects.