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The NATIONAL MARKER N172114 is an adjustable spring designed for doors and lightweight gates. It provides variable tension control to suit a range of applications, making it a practical choice for projects that require flexibility across spring sizes 3 through 6. The spring ships as a complete pack with all mounting hardware included, reducing the need for separate fastener sourcing. Installation is straightforward for maintenance technicians, contractors, and facilities personnel working on gate or door closure systems.
This spring is suited for residential and light commercial door and gate applications where adjustable tension is needed. It works well in projects calling for a single component that can cover multiple spring size requirements, from size 3 through size 6. The inclusion of all mounting hardware makes it ready to install without additional trips to the supply house.
Designed as a general-purpose adjustable spring replacement for doors and lightweight gates requiring size 3 through 6 spring fitment.
Install using standard hand tools. Ensure the door or gate is secured in a stable position before removing any existing spring hardware. Adjust tension only after all mounting fasteners are fully seated. Follow applicable local building codes for gate and door hardware installations.
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