Citadel Architectural Products, Inc.

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Citadel Architectural Products, Inc. is a manufacturer based in Indianapolis, Indiana, specializing in composite panels and systems for the commercial cladding industry. Founded in 1992 and acquired by MTL Holdings in 2022, Citadel utilizes over 40 years of lamination technology experience. The company operates an ISO 9001-certified manufacturing process, ensuring high-quality products and reliable customer service. Citadel offers a diverse range of products, including aluminum and metal composite panels, installation systems, trims, and accessories for both exterior and interior applications. Their key product lines feature exterior cladding systems like Envelope 2000® and various panel options with Class A fire ratings. They also provide glazing infill panels and specialized interior systems such as CleanCote® for cleanroom environments. Citadel supports its offerings with design services, installation systems, and a nationwide network of representatives and distributors to assist clients in the construction and design sectors.