Sargent MD8640 Dummy Function Concealed Vertical Rod Exit Device with Freewheeling Trim

Sargent MD8640 Concealed Vertical Rod Exit Device with Freewheeling Trim - 8600 Series

Professional Concealed Vertical Rod Exit Device Solution

The Sargent MD8640 is part of the proven 8600 Series concealed vertical rod exit devices, engineered for standard width stile applications on hollow metal doors. This dummy function device accommodates door thicknesses from 1-3/4" minimum to 2-1/4" maximum with 4-1/2" minimum stile width requirements. The system features factory-cut rails available in four sizes to accommodate door widths from 24" to 48", with device centerline positioning at 41" from finished floor for standard applications.

Professional Features & Benefits

• Door Compatibility: Designed for hollow metal doors with 1-3/4" to 2-1/4" thickness and 4-1/2" minimum stile width for versatile installation options.
• Rail Sizing System: Four factory-cut rail sizes accommodate door widths from 24" to 48" (E Rail: 24"-32", F Rail: 33"-36", J Rail: 37"-42", G Rail: 43"-48") for precise fit.
• Heavy-Duty Construction: Stainless steel top bolt and robust center case dimensions of 8-3/8" x 2-5/8" provide exceptional durability for commercial applications.
• Concealed Design: Vertical rod mechanism provides clean aesthetics while maintaining reliable exit functionality for professional installations.
• Flexible Installation Height: Standard 41" centerline from finished floor with 38" option for elementary schools and accessibility compliance applications.
• Strike System Compatibility: Compatible with 650 Top Strike and 606 Bottom Strike for both panic and fire rated applications.
• Electric Options Available: Supports multiple electronic enhancements including alarm (AL), Beacon (BT), SARGuide photoluminescent (PL), illuminated touchpad (TL), and various monitoring options (53-59).
• Maximum Opening Capacity: Accommodates door openings up to 120" maximum height for large commercial applications.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness (1-3/4" to 2-1/4"), stile width (4-1/2" minimum), and door opening height specifications.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces, ensuring proper rail size selection based on door width.
3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions, accounting for center case dimensions of 8-3/8" x 2-5/8".
4. Install all mounting hardware including 650 Top Strike and 606 Bottom Strike, securing the device to door and frame per manufacturer torque specifications.
5. Adjust operational components for proper alignment and smooth operation, verifying device centerline positioning at 41" from finished floor (or 38" for accessibility applications).
6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Commercial Office Buildings
• Educational Facilities
• Healthcare Institutions
• Retail Establishments
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties
• Government and Municipal Buildings

Why Choose Sargent Quality?

Sargent 8600 Series exit devices deliver professional-grade reliability with stainless steel top bolt construction and robust center case design engineered for demanding commercial applications. The concealed vertical rod system provides both aesthetic appeal and dependable exit functionality, with comprehensive electric options available for enhanced security and monitoring capabilities. Engineered for demanding commercial applications where dependable performance is essential.