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Sargent MD8410 Narrow Stile Concealed Vertical Rod Exit Device - Metal Door
The Sargent MD8410 is a high-performance Grade 1 Concealed Vertical Rod (CVR) exit device specifically engineered for narrow stile metal doors. By concealing the vertical rods within the door itself, the MD8410 offers a clean, aesthetic appearance while providing superior protection against tampering. This device is the ideal solution for full-glass aluminum doors or hollow metal frames in high-traffic commercial environments where both security and architectural design are priorities.
Secure Two-Point Latching and Life Safety
Designed to meet the most rigorous standards, the Sargent MD8400 Series is certified to ANSI/BHMA A156.3 Grade 1. This model provides robust two-point latching at the top and bottom of the door, ensuring maximum stability for 84" (7'0") openings. It is UL10C Fire Rated and UL305 Panic Listed, making it a reliable choice for building code compliance in schools, offices, and healthcare facilities.
Adaptive Installation and Electrified Options
The MD8410 is highly versatile, requiring a minimum stile width of only 1-3/4". For facilities prioritizing accessibility, it can be configured as a "Less Bottom Rod" (NB-MD8410) device, which eliminates the bottom strike to provide a clear path for wheelchairs and carts while preventing tripping hazards. To integrate with modern access control, the device supports a variety of electric options, including Remote Latch Retraction (56-) and Request-to-Exit (55-). For seamless power integration, the use of a QC12 Electrolynx connector on the associated hinge is the optimal choice for a reliable installation.
Key Product Features
- Concealed Rod Security: Rods are hidden within the door to prevent vandalism and maintain a sleek look.
- Narrow Stile Compatible: Purpose-built for metal doors with stiles as narrow as 1-3/4".
- Two-Point Latching: Secure stainless steel top bolt and mortised floor strike for total door control.
- Accessibility Friendly: Easily converted to NB (Less Bottom Rod) for obstacle-free thresholds.
- Grade 1 Performance: Certified ANSI/BHMA A156.3 for extreme longevity and high-frequency use.
- Adjustable Sizing: Available in four rail lengths (E, F, J, G) to fit door widths from 24" to 48".
Technical Specifications
| Feature | Details |
| Device Type | Concealed Vertical Rod (CVR) for Metal Doors |
| Door Height | Optimized for 84" (7'0") openings |
| Minimum Stile | 1-3/4" Width; 1-3/8" Square internal hollow |
| Standard Strikes | 650 Top Strike & 606 Mortised Bottom Strike |
| Dogging | Hex key dogging standard (Non-fire rated only) |
| Fire Rating | UL10C Listed (Optional thermal pin for NB-12- applications) |
| Fasteners | Supplied standard with machine screws |
Ordering Information & Handing
To ensure a perfect fit, Sargent rails are factory-cut to size; please provide the exact door width upon order placement. Additionally, door handing information (LHRB or RHRB) is required to ensure the device and any associated trim are correctly configured for your opening. For doors thicker than 1-3/4", specify the dimensions and use the 31- prefix. For high-use areas where keys are preferred for daily dogging, consider the 16- cylinder dogging option.
| General - US Finishes | US32D - Satin Stainless Steel/ 630 or BSP - Black Suede Power Coat or US3 - Polished Brass or US4 - Satin Brass or US10 - Satin Bronze or US10BE - Oil Rub Bronze Equal |
| Exit Device Fire Rating | Non Rated Door or Fire Rated Door |
| Sargent Exit Device Rail Length | F - 36" Wide Door or J - 42" Wide Door or G - 48" Wide Door |
| Sargent Exit Device Prefixes | 43 - Flush End Cap or 53 - Latchbolt Monitor Switch – available with 55, 56, 58, AL options) or 55 - Signal Switch in Rail or 56 - Motorized Electric Latch Retraction (Minimum door width for narrow & wide stile is 28") or 58 - Electric Dogging or 59 - Electroguard Delay Egress (Not available with 16-, 53-, 55-, 56-, 58- Options) |
| Brand | Sargent |
| Series | Sargent - 80 Series |
| Exit Device Type | CVR Exit Device |
| Door Opening Width | 36 Inches, 42 Inches, 48 Inches |
| Door Height | 7'0" Dr Ht |
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