Product Description
Von Duprin 6121 Electric Strike —
The Von Duprin 6121 is an open-back electric strike for double door applications without a mullion. Retrofits Folger Adam 310-4-100 strikes. The 9-1/8" faceplate and open-back design accommodate pair-door configurations where there's no center post. Heavy-duty stainless steel with 3/4" throw. Factory configured as fail safe with dual signal monitoring switch. 12VDC operation. Compatible with standard rim exit devices from Von Duprin, Falcon, Precision, Sargent. Fire rated UL 10C. The only 6100 series model specifically for mullion-less pairs.
⚡ Fail Safe vs. Fail Secure — What's the Difference?
Fail Safe — Strike unlocks when power is lost. The door can be opened freely during a power outage. Required on most fire-rated egress doors for life safety. This is the default for fire exits and emergency egress paths.
Fail Secure — Strike remains locked when power is lost. Key override is always available from outside. Used for server rooms, evidence rooms, or anywhere security must be maintained during a power failure. The mechanical push bar still allows free egress from inside.
Pro-Tip from Our Locksmiths: When cutting the frame, double-check the strike pocket depth against the template before routing. The 61xx series needs a clean pocket — any debris behind the strike body will cause binding on the latchbolt.
| Brand | Von Duprin (Allegion) |
| Part Number | 6121-FS-DS-12VDC-US32 |
| Series | Von Duprin 6121 |
| Application | Rim Exit Devices (Hollow Metal Frames) |
| Mode | Fail Secure |
| Voltage | 12VDC |
| Monitoring | Dual Switch |
| Faceplate | 4-7/8" |
| Latch Throw | 3/4" |
| Fire Rating | Non Fire Rated |
| Grade | ANSI/BHMA Grade 1 |
| Construction | Heavy-duty stainless steel body |
| Warranty | 3-year limited (electronic), Limited lifetime (mechanical) |
- Heavy-duty stainless steel construction — built for high-traffic commercial applications
- 4-7/8" faceplate with 3/4" latchbolt throw
- Fail Secure operation — remains locked on power loss, key override available
- Dual signal switch for door position and latch monitoring
- In stock at Lock Depot — same-day shipping on orders before 3 PM EST
Compatible With: Von Duprin 22, 33A, 35A, 88, 98/99 rim devices on hollow metal frames. Pair with a Von Duprin PS914 or PS904 power supply for a complete installation.
Authorized Von Duprin Distributor — Lock Depot is an authorized Von Duprin dealer. Every product ships brand new in original manufacturer packaging with full factory warranty. Contact us or call (877) 365-5625 for expert assistance.
Image shown is representative of the product line. Actual finish, trim, and configuration may vary by SKU.
