Rockwood 2845 Combination Flush Bolt Set | For Fire-Rated Metal Doors

The Rockwood 2845 Combination Flush Bolt Set is a specialized architectural solution for pairs of hollow metal doors. This set combines a self-latching top bolt with a fully automatic bottom bolt, providing a unique operational balance: the door remains securely latched at the top even when the active leaf is open, while the bottom bolt retracts automatically to provide a clear, hazard-free threshold. UL Listed for up to 3 hours, it is ideal for schools, hospitals, and commercial corridors.

Professional Security & Life-Safety Features

• Self-Latching Top Bolt: Automatically engages when the inactive door closes. It stays latched when the active door is opened, requiring a manual press of the integrated plunger button to release, providing enhanced control over the opening.
  
• Fully Automatic Bottom Bolt: To ensure ADA compliance and a clear floor path, the bottom bolt automatically retracts whenever the active door is opened.
  
• Thermal Lock Protection: Features an internal thermal lock that automatically deadlocks the inactive door under extreme heat (fire conditions), ensuring the door leaves stay closed to contain smoke and flames.
  
• Damage-Resistant Design: The built-in override feature prevents damage to the door or hardware if the bolt head is blocked from entering the strike.
  
• Adjustable Precision: Includes an adjustable bolt head rod (up to 1-1/2") to ensure a perfect, snug fit even if the door or frame is slightly misaligned.
  

Technical Specifications

• Model: Rockwood 2845
• Application: Fire-Rated Metal Doors (Labels A, B, C, D, & E)
• Door Size: Up to 4'W x 8'H
• Material: Solid Brass and Stainless Steel
• Face Plate Size: 1" x 6-3/4"
• ANSI/BHMA: A156.3 Type 27
• Closing Force: Ultra-low (5 lbs. maximum)