Rockwood 557 Lever Extension Flush Bolt

The cast brass 557 Lever Extension Flush Bolt is for use on select fire rated plastic & wood covered doors. This product maintains the door's strength with its corner reinforcing plate and is compatible with our 570 Dust Proof Strike.

Product Overview

• 3/4" backset
• Door strength maintained by corner reinforcing plate
• For Fire Rated Plastic and Wood Covered Doors measuring up to 4'w x 10'h rated up to and including 1-1/2 hours
• Use 570 Dust Proof Strike to prevent dirt blocking bottom strike
• Flush bolt rods cannot be extended
• Optional Torx Security Screws

Specifications

• Base Material: Cast brass
• Fastener: 7 ea. #8 x 3/4" FH combo screws 4 ea. #8 - 32 x 1/2" FH MS 4 ea. #8 counter sunk washer
• Weight: 0.85lbs.
• Bolt Throw: 3/4"