The Rockwood 550 Lever Extension Flush Bolt keeps fire-rated hollow metal swinging doors secure while allowing smooth operation. Because it has a 12″ rod and adjustable bolt head, it fits many door setups, and it works with the 570 Dust Proof Strike to prevent dirt from blocking the bottom strike. In addition, it comes in several rod lengths, so installers can choose the best size. As a result, the bolt ensures reliable locking for daily use.

Product Overview:

• Designed for fire-rated hollow metal swinging doors up to 4′ wide x 10′ high, rated up to 3 hours
• 3/4″ rod backset allows easy installation
• 12″ rod length (center of face to bolt end, retracted)
• 1-1/2″ adjustable bolt head (remove strike guide to adjust)
• Sold in packs of 2
• Also, compatible with the 570 Dust Proof Strike to prevent debris buildup
• Moreover, the bolt provides secure locking even under frequent use
• Finally, it delivers long-lasting performance in high-traffic areas

Specifications:

• Base Material: Brass, Bronze, Stainless Steel
• Fasteners: 8 ea. #8 x 3/4″ FH combo screws
• Weight: 0.85 lbs
• Bolt Throw: 3/4″
• Faceplate: 1-1/4″ w x 6-3/4″ l
• Guide: 1″ w x 2″ l
• Strike: 15/16″ w x 2-1/4″ h