Rockwood Manufacturing Co

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.

Features:

• 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
• 2 per pack
• 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"
• Faceplate Sizing: 1" x 6 3/4"
• Strike Sizing: 15/16" x 2 1/4"

Finishes:

• US3/605 - Polished clear coated
• US4/606 - Satin clear coated
• US10/612 - Satin clear coated
• US10B/613 - Satin oxidized oil rubbed
• 10BE/613E - Dark oxidized satin bronze, equivalent
• US26/625 - Polished chrome plated
• US26D/626 - Satin chrome plated
• BSP - Black suede power coat
• WSP - White suede powder coat