Approved by the New York City Housing Authority (NYCHA) and patented in Taiwan, China and the USA. The foolproof locking device for these double acting spring hinges meets U.S. Federal specification FF-HH-116C (the top button on the hinge is not removable, so that the spring cannot be removed or tampered with). This makes these hinges particularly ideal for use on homes, commercial projects and public buildings. Click here if you need assistance measuring a Double Action Hinge.
Product Specifications / Details
- 6″ Heavy Duty Size: for use up to 70 lbs. with 2 Hinges
- Heavy Duty Steel – Primed for Painting Finish
- For door thickness 1 1/4″ to 1 3/4″
- Instructions, mounting screws and adjusting bar included with each hinge.
- 2 Pack
Diagrams and Installation Instructions: 
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How to Adjust a Double Action Hinge:
