Rockwood 555 Manual Lever Extension Flush Bolt for Metal Doors

The 555 Lever Extension Flush Bolt is specifically designed for integration with select fire-rated hollow metal swinging doors. Its primary function is to secure the door in place by engaging the door frame, thereby enhancing the safety and security of the space.

This flush bolt is typically installed in the top and bottom edges of the inactive leaf of metal double doors. When operated, the top bolt projects upward into the frame head, while the bottom bolt extends downward into the floor or threshold. By securing the inactive leaf in this manner, the active door can reliably latch into it, providing a stable and secure closure—especially important in applications requiring fire ratings and compliance with building codes.

• Face Plate: 6-3/4" hi x 1" wi
• Material: Brass
• Fastener: 8 ea. #8 x 3/4 FH Combo Screws
• Features: 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. (strike guide must be removed to adjust)
• Use #570 Dust Proof Strike to prevent dirt blocking bottom strike
• Strike: 15/16" x 2-1/4"
• Guide: 1" x 2"
• ANSI A156.16: L04251

For Fire Rated Hollow Metal Swinging Doors measuring up to 4'w x 10'h rated up to and including 3 hours. For use on A,B,C,D, & E labeled metal doors - Standard rod length is 12".

• 24" top rod maybe additionally required for 8'0" high doors.

Please Note: Flush Bolts are priced as "each" and packaged in boxes of 2 

Exploring Options for the 555 Lever Extension Flush Bolt

When it comes to enhancing security and functionality on select fire-rated hollow metal swinging doors, the 550 Lever Extension Flush Bolt is a solid choice. This product offers flexibility and compatibility to suit your specific needs.

Key Features to Consider:

• Material Excellence: Crafted from durable brass, ensuring longevity and reliability.
• Tailored Rod Sizes: The flush bolt can be customized with a variety of rod lengths. This allows you to choose the perfect fit for your door specifications.
• Enhanced Security: Designed for use with compatible 570 Dust Proof Strikes, providing an extra layer of security and cleanliness.

Quick Summary of Options:

1. Versatile Rod Lengths: Different rod lengths mean you can select the most appropriate one for the specific door height and installation environment.
2. Safety Assurance: Its fire-rated compatibility ensures it meets safety standards necessary for fire doors, giving you peace of mind in high-risk settings.

Selecting the right components can significantly impact the security and efficiency of your fire-rated doors. The 550 Lever Extension Flush Bolt offers customizable options to cater to a wide range of door requirements.

How the 554G Rabbet Guide and 554S Rabbet Strike Facilitate Installation of the 555 Lever Extension Flush Bolt on Rabbeted Edge Doors

When it comes to installing the 555 Lever Extension Flush Bolt on doors with rabbeted edges, the 554G Rabbet Guide and 554S Rabbet Strike play a crucial role. These components are designed to work seamlessly together, ensuring a smooth and precise installation process.

The 554G Rabbet Guide acts as an alignment tool, guiding the flush bolt into the correct position on the rabbeted edge. It ensures that the bolt sits flush against the door, maintaining both aesthetic appeal and functional integrity.

On the other hand, the 554S Rabbet Strike serves as the catch point for the flush bolt. It provides a secure hold, preventing any movement or misalignment once the bolt is engaged. This strike plate is specifically designed to work with rabbeted edges, accommodating their unique structure.

Why Use These Guides and Strikes?

• Precision: Ensures that the flush bolt aligns perfectly with the rabbeted edge.
• Stability: Provides a solid locking mechanism, preventing any accidental disengagement.
• Ease of Installation: Simplifies the installation process, reducing the time and effort required.

In summary, the combination of the 554G Rabbet Guide and 554S Rabbet Strike with the 555 Lever Extension Flush Bolt results in a secure, neatly aligned installation on rabbeted edge doors, enhancing both function and form.