1091AIWDV SDC FailSafe Spacesaver Mortise Bolt Lock for Wood Door in Aluminum

Product Description

1091AIWDV SDC SpaceSaver Fail-Safe Electric Bolt Lock for Wood Doors - 12/24VDC, Aluminum Finish

If you are retrofitting access control on a wood door or wood-framed opening and the frame is too narrow for a standard electric strike, you know the problem: nothing fits. Standard mortise bolt locks are built for metal frames, and forcing one into a wood stile means chiseling out more material than the frame can spare. The SDC 1091AIWDV is purpose-built for this exact scenario. It is the wood-door variant of SDC's SpaceSaver 1091 series, with an oversized 8-1/2 inch faceplate that spreads the mounting load across soft wood frames instead of concentrating stress on a small mortise pocket. The right-angle bolt design lets you mortise the lock body into virtually any standard wood frame or door stile with a simple rectangular cutout - no milling fixtures, no CNC routing.

This is the fail-safe configuration: the bolt projects when energized, and retracts automatically when power is cut by the access control system, a power failure, or a fire alarm signal. That makes it code-compliant for fire/life-safety openings where the door must free-swing on power loss. SDC's repelling-magnet backup means even if the return spring fails, the bolt physically ejects from the strike - the only electric bolt lock with that level of redundancy. The automatic relock ball switch keeps the bolt retracted while the door is open and throws the bolt when the door closes, so the opening re-secures itself every cycle without any signal from the controller.

SKU Breakdown

Technical Specifications

Compliance & Codes

UL Listed, US & Canada. UL 10C Positive Pressure Fire Test compliant. Listed by the California State Fire Marshal for locking perimeter entrance and emergency exit doors after-hours. Meets NFPA 101 Life Safety Code requirements for fail-safe hardware on paths of egress.

What's in the Box

1091AIWDV bolt lock assembly with oversized wood-door faceplate, strike plate, two aluminum mounting tabs, and installation hardware. Wiring leads included. Power supply sold separately - SDC recommends the PR-1000 Power Regulator for bolt lock applications.

Pro-Installer FAQ

Q: What is the difference between the 1091AIWDV (wood door) and the standard 1091AIV?
A: The WD variant has a longer faceplate - 8-1/2 inches instead of the standard 8 inches - designed to spread the mounting load across wood frames. The lock body and electrical specs are identical. If you are installing into a hollow metal frame, use the standard 1091AIV. If you are going into a wood frame or wood-veneered door, the WD version gives you the wider bearing surface and proper screw spacing for wood.

Q: Can this lock be used on a sliding door?
A: Yes. The automatic relock ball switch is bidirectional, so it works on both swinging and sliding doors. The bolt throws at a right angle to the lock body, which makes it a natural fit for pocket doors, barn doors, and sliding storefront panels where a standard deadbolt would not physically work.

Q: Do I need a separate power supply?
A: Yes. The 1091AIWDV draws 0.45A at 24VDC or 0.9A at 12VDC continuous duty. Use a regulated DC power supply rated for the load. SDC's PR-1000 Power Regulator is specifically designed for their bolt locks - it provides high inrush current to project the bolt, then drops to a holding current to prevent solenoid overheating on long duty cycles. On runs over 100 feet, size your wire gauge to prevent voltage drop below the minimum operating threshold.

Product images are representative and may not depict the exact SKU, finish, or configuration listed. Always verify specifications before ordering.

Lock Depot sells brand new SDC products with the full manufacturer warranty.