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Surface Door Closers: National Lock Supply's Solution for Secure and Controlled Access

Mar 13



The safety and functionality of doors in commercial and public buildings are critical elements of security and convenience. Surface door closers are key components in achieving controlled access, ensuring doors are securely closed and properly latched. National Lock Supply, a leading provider of top-quality security products, offers a wide range of Cylindrical Electric Strikes that enhance the security and accessibility of buildings. In this article, we will delve into the world of surface door closers and explore how National Lock Supply's solutions deliver reliable and controlled access solutions.


Understanding Surface Door Closers


Surface door closers, often referred to as door closers or overhead door closers, are mechanical devices that control the opening and closing of doors, typically installed on the surface of the door and frame. These closers consist of a hydraulic mechanism that controls the speed and force with which the door closes. Key features of surface door closers include:


  1. Closing Speed Control: Surface door closers allow users to adjust the closing speed to ensure that doors close gently and securely.


  1. Latching Speed Control: They also enable control over the latching speed, which is the speed at which the door securely engages with the frame.


  1. Delayed Action: Some surface door closers offer a delayed action feature, allowing the door to close more slowly at first to accommodate individuals with limited mobility.


  1. Hold-Open Feature: Certain closers have a hold-open option that allows the door to remain open at a specific angle until manually closed.


National Lock Supply's Expertise


National Lock Supply has earned a reputation as a trusted provider of security products, and their range of Commercial Door Hardware exemplifies their commitment to quality and customer satisfaction.


  1. Wide Selection: National Lock Supply offers a comprehensive range of surface door closers suitable for various door types, building requirements, and security needs. Whether you need closers for commercial buildings, schools, or healthcare facilities, they have a solution that meets your needs.


  1. Durability and Reliability: National Lock Supply's surface door closers are built for reliability and long-term performance. These closers are constructed using high-quality materials to withstand the demands of high-traffic areas.


  1. Code Compliance: National Lock Supply's surface door closers adhere to local and international safety and building codes, ensuring they provide the highest level of security and compliance.


  1. Customization: The company offers customization options, allowing customers to choose the surface door closer that aligns with their specific door type, aesthetics, and security requirements.


  1. Expert Support: National Lock Supply provides the expertise of its security professionals to assist customers with product selection, installation guidance, and addressing any security-related questions.


Security and Accessibility


National Lock Supply's Cylindrical Lever Locks contribute to both the security and accessibility of commercial and public buildings. By ensuring that doors consistently close and latch securely, these closers enhance building security by preventing unauthorized access and protecting occupants from external threats. Additionally, the adjustable closing and latching speeds allow for smooth and controlled access, making it easier for individuals with varying mobility levels to use the doors comfortably.




Surface door closers are essential components of security systems in commercial and public buildings. National Lock Supply's dedication to providing high-quality, customizable, and reliable Cylindrical Knob Locks ensures that they stand out in the security industry. With a comprehensive selection, adherence to safety codes, and an unwavering commitment to excellence, National Lock Supply is the go-to source for all your security needs. When it comes to safeguarding your spaces and ensuring controlled access, choosing National Lock Supply's surface door closers is a decision that ensures both security and convenience.

National Lock Supply
165 Harrison Ave, Brooklyn, NY 11206