Sargent MD8646 Concealed Vertical Rod Exit Device with Storeroom Function and Freewheeling Trim

Sargent MD8646 Concealed Vertical Rod Exit Device with Storeroom Function and Freewheeling Trim

Professional Concealed Vertical Rod Exit Device Solution

The Sargent MD8646 is part of the proven 8600 Series concealed vertical rod exit devices, engineered for standard width stile applications on hollow metal doors. This storeroom function device features freewheeling trim and accommodates door thicknesses from 1-3/4" minimum to 2-1/4" maximum with 4-1/2" minimum stile width requirements. Designed for both single and double door applications with comprehensive rail sizing options for doors ranging from 24" to 48" widths.

Professional Features & Benefits

• Door Thickness Compatibility: Accommodates 1-3/4" minimum to 2-1/4" maximum door thickness for versatile hollow metal door applications.
• Stile Width Requirements: 4-1/2" minimum stile width ensures proper mounting and operation on standard commercial door frames.
• Comprehensive Rail Sizing: Four rail sizes accommodate door widths from 24" to 48" - E Rail (24"-32"), F Rail (33"-36"), J Rail (37"-42"), and G Rail (43"-48") with factory cutting available.
• Professional Strike System: Includes 650 Top Strike and 606 Bottom Strike rated for both panic and fire applications.
• Stainless Steel Construction: Top bolt manufactured from stainless steel for enhanced durability and corrosion resistance.
• Precise Installation Specifications: Device centerline positioned at 41" from finished floor for standard applications, 38" for elementary schools and accessibility compliance.
• Flexible Dogging Options: Standard hex key dogging on non-fire rated devices, with optional cylinder dogging (#41 cylinder supplied) available.
• Extensive Electric Options: Compatible with AL-Alarm, BT-Beacon, PL-SARGuide Photoluminescent, TL-SARGuide Illuminated Touchpad, and multiple monitoring/control systems including delayed egress and electric dogging.

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 width for proper rail selection.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces, ensuring proper device centerline positioning at 41" from finished floor.
3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions, accommodating center case dimensions of 8-3/8" x 2-5/8".
4. Install 650 Top Strike and 606 Bottom Strike components, ensuring proper alignment with vertical rod mechanism and door opening height specifications.
5. Mount the exit device using supplied machine screw fasteners and adjust rail length if factory cutting was not specified for exact door width.
6. Test device operation to verify proper function including pushbar travel (3" neutral to 2-1/8" depressed), latching engagement, and dogging mechanism operation. 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 comprehensive rail sizing systems for precise door width compatibility. The series provides simplicity, strength, and durability with extensive electric option compatibility for advanced access control integration. Engineered for demanding commercial applications where dependable egress performance and code compliance are essential.

Product Documentation & Resources

• [Catalog] SARGENT Full Line Catalog