The Rockwood 555-12 Lever Extension Flush Bolt Has a 3/4" bolt throw, 3/4" rod backset 12" rod length (center of face to bolt end - retracted), 1 1/2" adjustable bolt head, and is for use with Fire Rated Hollow Metal Swinging Doors.

• For Fire Rated Hollow Metal Swinging Doors measuring up to4'w x 10'h rated up to and including 3 Hours
  
• Fits ANSI A115 door and frame preparation
• 3/4" bolt throw, 3/4" rod backset
• 12" rod length (center of face to bolt end - retracted)
• 1-1/2" adjustable bolt head