![Decoded: NFPA 80 Requirements for Hinges, Pivots, and Continuous Hinges - I Dig Hardware - Answers to your door, hardware, and code questions from Allegion's Lori Greene. Decoded: NFPA 80 Requirements for Hinges, Pivots, and Continuous Hinges - I Dig Hardware - Answers to your door, hardware, and code questions from Allegion's Lori Greene.](http://idighardware.com/wp-content/uploads/2016/07/Hinge-Shim-1.jpg)
Decoded: NFPA 80 Requirements for Hinges, Pivots, and Continuous Hinges - I Dig Hardware - Answers to your door, hardware, and code questions from Allegion's Lori Greene.
How many hinges are needed on a fire door? - Fire Doors and Accessories - Safelincs Fire Safety Forum
![Fire Door Brain Teaser - I Dig Hardware - Answers to your door, hardware, and code questions from Allegion's Lori Greene. Fire Door Brain Teaser - I Dig Hardware - Answers to your door, hardware, and code questions from Allegion's Lori Greene.](http://idighardware.com/wp-content/uploads/2011/10/NFPA-80-Locations.jpg)