- Designed for automatic self-closing doors, this Single Acting Spring Hinge is perfect for 1-3/4" thick doors with a robust .134 thickness. - Constructed from durable steel and featuring a plated finish, it ensures long-lasting performance and resistance to wear. - Recommended installation of three spring hinges per door supports doors weighing up to 150 lbs, providing reliable closure and functionality. - UL approved for fire-rated door openings up to 3/0 x 7/0, ensuring compliance with safety standards in commercial and residential applications. - Features adjustable spring tension, allowing for personalized closing speed and force to suit your specific needs. Applications: - Ideal for commercial spaces where automatic self-closing is essential, such as offices, retail stores, and hospitals to enhance safety and efficiency. - Perfect for residential use on entry doors, providing convenience and security by ensuring doors close securely every time. - Suitable for fire-rated doors in public buildings, ensuring safe egress and adherence to fire safety regulations.