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Commercial Door Company, Inc. was founded in 1949 specializing in service, repair and new installation of commercial doors and gates. We have over 40 trucks to service Southern California and have one of the most experienced teams to take care of your needs for almost any kind of commercial door, gate, dock, or personnel access control requirement. Professionalism, knowledge, Integrity, and dedication to our customers are what sets us apart in our market. Our employees are dedicated and work as partners with our customers to help them find the best solutions for all their door needs. This is why we are considered to be one of the most respected commercial door company's in California. The Commercial Door Company team of sales and service professionals offer decades of experience and are always willing to help fulfill your safety and security needs.

Sierra Group is a service-focused company based in Glendale, CA, specializing in commercial construction, facility maintenance, and electronic security. With three independent business units, they provide a wide range of trade services to corporate, financial, industrial, municipal, and government institutions. Their commitment to service, dependability, and cost-effective solutions is evident in their adherence to industry best practices. Sierra Group's commercial construction division delivers seasoned contractors and established best practices to ensure successful projects. Their facility maintenance team offers a comprehensive range of services, including preventative maintenance programs, while their electronic security division provides state-of-the-art solutions for video surveillance, access control, alarm systems, and intercoms. With a culture of integrity and a focus on customer satisfaction, Sierra Group is a trusted partner for all building maintenance needs.Generated from the website