SDC Spacesaver 1291 Series Rig...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$521.00
$338.28
SDC SDC 1291 Series - Spacesaver Right Angle Electric Mortise Bolt Lock, Failsecure SDC-1291

SDC Spacesaver 1291 Series Right Angle Electric Mortise Bolt Lock with Fail-Secure Operation

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Model: 1291AHV
$521.00
$338.28
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$521.00
$338.28
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SDC Spacesaver 1291 Series Right Angle Electric Mortise Bolt Lock with Fail-Secure Operation

Patented Concealed Mortise Locking Technology

The SDC Spacesaver 1291 Series represents a fundamental innovation in electric locking technology, featuring a patented right angle bolt design that projects perpendicular to the lock mechanism. This fail-secure electric mortise bolt lock operates on 12/24VDC power and installs via simple mortise cutout in virtually any standard frame or door lock stile. With the entire lock concealed, this system provides complete aesthetic acceptability while delivering superior security for access control applications.

Professional Features & Benefits

  • Patented Right Angle Design: Spacesaver bolts project at right angles to the lock mechanism, allowing installation in virtually any standard frame or door lock stile with complete concealment.
  • Specification Grade Components: Equipped with stainless steel bolts and specification grade solenoids for superior performance in both force and longevity compared to commercial grade alternatives.
  • Dual Voltage Operation: Field selectable 12/24VDC operation with voltage and current spike protection plus integrated power regulator for flexible system integration.
  • Fail-Secure Operation: Maintains locked position during power loss for enhanced security in access control applications.
  • Automatic Relock System: Field adjustable and bidirectional automatic relock ball switches keep bolt retracted while door is open, with automatic projection upon door closure.
  • Tamper-Resistant Construction: Freely rotating stainless steel bolts make tampering or cutting attempts extremely difficult while providing long-term durability.
  • Universal Installation: Simple mortise cutout installation works in old or new construction with included mounting tabs for fast, economical setup.
  • Fire Safety Certified: UL 10C Positive Pressure Fire Tests certified along with ULC-S104 and ULC-S533 compliance for egress door applications.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Electronic: Yes
  • Fail-Safe/Fail-Secure: Fail-Secure
  • Lock Type: Mortise
  • PDF:SDC Full Catalog: https://zensupply.com/content/pdf/lcn/CondensedHardwareBrochure
  • Product Category: Mechanical Locks
  • Product Group: Mechanical Locks
  • Product Model: 1291
  • Product Subgroup: Mortise Locks and Trim
  • Product Type: Mortise Bolts
  • Product Voltage: 12/24VDC
  • Series: 1291 Series
  • Subcategory: Mortise Bolt Lock

Professional Applications

  • Commercial Building Access Control Systems
  • Educational Facility Security
  • Healthcare Institution Controlled Access
  • Government and Municipal Buildings
  • Industrial Facility Entry Points
  • Multi-Tenant Residential Properties
  • Retail Security Applications

Why Choose SDC Quality?

SDC Spacesaver electric mortise bolt locks deliver patented innovation with specification grade solenoids and stainless steel construction for demanding commercial applications. UL 10C fire test certification and ULC compliance ensure code-compliant performance, while the concealed mortise design provides superior aesthetics and security. Engineered for professional access control systems where reliable fail-secure operation and tamper resistance are essential.

Manufacturer Resources

SDC Full Catalog

Product Specs

Series:
1291 Series
Subcategory:
Mortise Bolt Lock
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Bolts
Commercial/Residential:
Commercial
Electronic:
Yes
Lock Type:
Mortise
Fail-safe / Fail-secure:
Fail-Secure
Product Model:
1291
Product Voltage:
12/24VDC
Product Category:
Mechanical Locks
Department:
Door Hardware

SDC 1291AHV – Frequently Asked Questions

1) Does the SDC 1291 Spacesaver mortise bolt stay locked or unlock when the power goes out?
The 1291 Spacesaver is fail-secure, so the bolt stays projected and the door stays locked when power drops. That is the right choice for a stockroom, IT closet, or perimeter opening where a power failure should not open the door. It is the wrong choice for an opening where the code official or your life safety plan requires the hardware to release on power loss, since the 1291 is fail-secure only and offers no fail-safe version.
2) What voltage does the SDC 1291 electric mortise bolt run on, and do I have to order it for 12V or 24V?
One part covers both. The 1291 runs 12/24VDC and the voltage is field selectable, so you pick it at install rather than at the order form. It also carries voltage and current spike protection and an onboard power regulator, which is what lets it sit on a shared access control supply with other devices.
3) Will an SDC 1291 mortise bolt fit a narrow aluminum storefront stile?
That is what the right angle design is for. The Spacesaver bolt projects perpendicular to the lock body, so the mechanism lies along the stile instead of needing depth behind the bolt. It installs with a simple mortise cutout in virtually any standard frame or door lock stile, and the whole lock is concealed once it is in. If the door is wood rather than aluminum, order the WD model, which is the wood application version.
4) Is the SDC 1291 bolt lock approved for a fire rated door?
The 1291 is certified to UL 10C Positive Pressure Fire Tests and complies with ULC-S104 and ULC-S533 for egress door applications. Those are the listings a fire door assembly inspection will ask for on the electric locking device.
5) How do I get a manual way out if the SDC 1291 loses power or the access control system fails?
Order a mechanical release model. DMR is the jamb mount mechanical release, DMR1 is the door mount version, and DDMR1 is a dual mechanical release, door mount. If you order the plain Fail-Secure model you get no mechanical release at all, so decide this before the order goes in. On a pair of doors or an opening where someone has to be able to retract the bolt by hand from either side, DDMR1 is the one to specify.
6) Can I monitor whether the SDC 1291 bolt is actually thrown, not just whether the door is shut?
Both are available and they are separate options. Bolt Position Status (BPS) reports the bolt itself, and Door Position Switch (DPS) reports the door. Order them independently, or both together on one unit. For a head end that has to prove a secure condition (healthcare med rooms, records storage, anywhere an audit asks for it), BPS is the one that tells you the bolt is really in the keeper, since DPS alone only says the door is closed.
7) How does the SDC 1291 know not to project the bolt while the door is standing open?
Automatic relock ball switches handle it. They hold the bolt retracted while the door is open and let it project as soon as the door closes, so the bolt never fires into the edge of an open door or the face of the frame. The switches are field adjustable and bidirectional, which matters on a door that gets propped or on a pair where the closing sequence varies.
8) Should I use a concealed mortise bolt like the SDC 1291 or a surface mounted electric strike or maglock?
Pick the 1291 when the opening has to look like nothing was added to it. The lock buries entirely in a mortise cutout in the door or frame, so there is no surface housing, no bracket, and nothing on the face to attract tampering, which is why it goes into lobbies, retail, and glass front openings where a maglock and its armature plate would be visible. It also holds with a stainless steel bolt rather than magnetic force, so it does not drop when power drops. The trade off is the cutout: a strike or maglock mounts to existing material, while the 1291 needs a mortise pocket prepped in the door or frame. It does work in old construction as well as new, and mounting tabs are included.
9) How well does the SDC 1291 bolt hold up against someone trying to cut or pry it?
The bolts are stainless steel and rotate freely in place, which defeats a saw blade, a blade cannot bite on a bolt that spins. SDC pairs them with specification grade solenoids rather than commercial grade ones, rated for more force and longer life. This is a commercial duty device, not residential hardware.
10) Can the SDC 1291 be retrofitted into an existing door, or is it new construction only?
Either. The 1291 goes into old or new construction, the requirement is a mortise cutout in the frame or the door lock stile. Mounting tabs come with the lock, so the install is a cutout, the tabs, and the wire run for 12/24VDC power back to the access control panel.
11) What do I need to specify when ordering an SDC 1291 Spacesaver bolt?
Four decisions. Model, which is plain Fail-Secure or one of the mechanical release configurations (DMR jamb mount, DMR1 door mount, DDMR1 dual door mount) or WD for wood applications. Finish, from the eleven codes offered. Then Bolt Position Status yes or no, and Door Position Switch yes or no, which are ordered separately from each other. Voltage is not an ordering decision, the unit is field selectable 12/24VDC.
12) What finishes can I get the SDC 1291 mortise bolt in to match the rest of my doors?
Eleven finishes across the series: 335 dull black, 605 bright brass, 606 dull brass, 611 bright bronze, 612 dull bronze, 613 oil rubbed bronze, 625 bright chrome, 626 dull chrome, 628 dull aluminum, 629 bright stainless, and 630 satin stainless steel. Worth noting for a property manager standardizing a building: the lock body is concealed in the mortise, so the finish is only about the exposed faceplate matching adjacent hardware, not the whole assembly.
How fast can I get the SDC 1291AHV delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the SDC 1291AHV come with a warranty?
Absolutely. The SDC 1291AHV is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the SDC 1291AHV?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the SDC 1291AHV from ZenSupply?
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