Description

This handy fire door gap gauge is a great teaching tool for quickly checking fire door gap requirement compliance.

DOOR TO FRAME CLEARANCES:

• WOOD DOOR: MAX 1/8” (NFPA 80 v2013 6.3.1.7.1)
• STEEL DOOR: 1/8” +/- 1/16” (NFPA 80 v2013 6.3.1.7.1)

DOOR TO FINISHED FLOOR CLEARANCE:

• ALL DOORS: 3/4″ (NFPA 80 v2013 4.8.4.1)
• IF THRESHOLD IS ABOVE 38”: 3/8” (NFPA 80 v2013 4.8.4.2)

HOW TO USE THE CLEARANCE GAUGE:

• With the door closed, measure from the pull side of the door.
• Measure the clearance between the door and frame:
  1. Top
  2. Hinge Side
  3. Latch Side
• Between the doors (when installed in pairs)
• Measure the clearance between the door and finished floor.