SDC 1091 Series Spacesaver Rig...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$440.00
$274.00
SDC SDC 1091 Series - Spacesaver Right Angle Electric Mortise Bolt Lock, Failsafe SDC-1091

SDC 1091 Series Spacesaver Right Angle Electric Mortise Bolt Lock with Field Selectable Fail-Safe Operation

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Model: 1091AIV
$440.00
$274.00
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$440.00
$274.00
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SDC Spacesaver Right Angle Electric Mortise Bolt Lock with Field Selectable Fail-Safe Operation

Concealed Mortise Electric Locking Innovation

The SDC Spacesaver Series right angle bolt lock delivers patented electric locking technology through a compact, concealed design that installs in virtually any standard door frame or lock stile via simple mortise cutout. This field selectable dual voltage (12/24VDC) lock features specification grade solenoids and automatic relock ball switch functionality for superior performance in commercial, industrial, and institutional applications requiring enhanced security and tamper resistance.

Professional Features & Benefits

  • Concealed Mortise Installation: Right angle bolt projection allows space-efficient installation through simple mortise cutout, ideal for both new construction and retrofit applications.
  • Specification Grade Solenoids: Superior durability and performance over commercial-grade alternatives for demanding professional applications.
  • Automatic Relock Ball Switch: Keeps bolt retracted when door is open and automatically projects the bolt when door closes for secure automatic locking operation.
  • Tamper-Resistant Construction: Stainless steel bolt resists cutting and tampering with freely rotating bolt design for enhanced security protection.
  • Field Selectable Dual Voltage: 12/24VDC operation with built-in voltage and current spike protection plus power regulator for stable performance.
  • Bidirectional Operation: Field adjustable for use on both swinging and sliding doors with mounting tabs included for simplified installation.
  • Fire Safety Certifications: UL 10C Positive Pressure Fire Tests and ULC-S104 Standard Method for Fire Tests compliance for code-compliant installations.
  • Mechanical Override Option: Available models (1091AIDMR and 1291AHDMR) feature mortise cylinder override for manual unlocking during power failure or system malfunction.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Electronic: Yes
  • Fail-Safe/Fail-Secure: Field Selectable
  • Lock Type: Mortise
  • PDF:SDC Full Catalog: https://zensupply.com/content/pdf/lcn/CondensedHardwareBrochure
  • Product Category: Mechanical Locks
  • Product Group: Mechanical Locks
  • Product Model: 1091
  • Product Subgroup: Bored Locksets
  • Product Type: Mortise Bolts
  • Product Voltage: 12/24VDC
  • Series: 1091 Series
  • Subcategory: Mortise Bolt Lock
  • Tags: sdc 1091a, sdc 1190a, spacesaver bolt lock, sdc concealed bolt lock, right angle electric bolt lock

Professional Applications

  • Commercial Building Security Systems
  • Narrow-Profile Aluminum Door Installations
  • Hollow Metal Frame Security Applications
  • Glass Storefront Access Control
  • Sliding Door Lock Systems
  • Retrofit Security Installations
  • Industrial Facility Access Points

Why Choose SDC Quality?

SDC Spacesaver electric bolt locks deliver professional-grade reliability with specification grade solenoids and stainless steel bolt construction designed for demanding commercial applications. UL 10C and ULC-S104 fire safety certifications ensure code compliance while patented concealed installation technology provides enhanced security where dependable performance is essential.

Manufacturer Resources

SDC Full Catalog

Product Specs

Series:
1091 Series
Subcategory:
Mortise Bolt Lock
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Mortise Bolts
Commercial/Residential:
Commercial
Electronic:
Yes
Lock Type:
Mortise
Fail-safe / Fail-secure:
Field Selectable
Tags:
sdc 1091a, sdc 1190a, spacesaver bolt lock, sdc concealed bolt lock, right angle electric bolt lock
Product Model:
1091
Product Voltage:
12/24VDC
Product Category:
Mechanical Locks
Department:
Door Hardware

SDC 1091AIV – Frequently Asked Questions

1) Will an SDC 1091 Spacesaver bolt lock work on an aluminum storefront door with a narrow stile?
That's one of the openings the Spacesaver right angle bolt is built for. The right angle bolt projection lets the body install through a simple mortise cutout in a standard frame or lock stile rather than needing the depth a conventional mortise device wants, and narrow-profile aluminum doors and glass storefront openings are named applications. Hollow metal frames are covered too. The bolt itself is stainless steel and rotates freely, so it resists cutting.
2) Does the SDC 1091 fail safe or fail secure when the power drops?
You pick it in the field. Fail-safe/fail-secure on the 1091 Series is field selectable, so the same lock can be set to release on power loss for an egress or fire-alarm-tied opening, or to stay locked when power drops on a storage or equipment room. That decision is made at install, not at the order form, which is why one part number covers both duties across a building.
3) How do I get into a door with an SDC 1091 electric bolt if the power or the access control system is down?
Order one of the mechanical release models. The 1091 range includes DMR (mechanical release, jamb mount), DMR1 (mechanical release, door mount), and DDMR1 (dual mechanical release, door mount), and the 1091AIDMR and 1291AHDMR models carry a mortise cylinder override for manual unlocking during a power failure or system malfunction. A plain Fail-Safe model without a release option gives you no key override, so if the opening needs one, specify it up front.
4) Can an SDC 1091 bolt lock be used on a sliding door, not just a swinging one?
Both. The lock is field adjustable for swinging and sliding door use, and mounting tabs are included, so you aren't buying a separate sliding-door version. Sliding door lock systems are a named application for the series. For wood openings there's a dedicated WD model in the range.
5) How do I monitor whether the door is actually locked with an SDC 1091 bolt lock?
Two separate switch options, and they order independently. Bolt Position Status (BPS) tells your panel whether the bolt is actually thrown; Door Position Switch (DPS) tells you whether the leaf is closed. Each is a yes/no choice when you configure the lock, so you can take one, both, or neither. If your head end needs to prove the opening is secured, not just shut, you want BPS as well as DPS.
6) Can I put an SDC 1091 Spacesaver bolt lock on a fire rated door?
The Spacesaver bolt lock complies with UL 10C Positive Pressure Fire Tests and ULC-S104 Standard Method for Fire Tests. On a fire rated opening you'll normally want it set fail-secure so the door stays latched under alarm, which the field selectable setting lets you do, and the mechanical release models give you key access without power.
7) Will the bolt on an SDC electric mortise bolt lock jam against the frame if the door is open when the system relocks?
No, that's what the automatic relock ball switch handles. It keeps the bolt retracted while the door is open and projects it automatically once the door closes, so a relock command with the leaf standing open won't drive the bolt into the jamb face. It also means the opening secures itself on close without a separate command.
8) What is the difference between the DMR and DMR1 versions of the SDC 1091?
Where the release mounts. DMR is a mechanical release mounted in the jamb; DMR1 mounts the release on the door itself; DDMR1 is a dual mechanical release, door mount. Pick by which side you can run the cylinder and linkage on. On a storefront pair or a glass opening where the stile has no room for a cylinder, the jamb mount DMR is usually the one that fits.
9) Is the SDC 1091 a good choice for retrofitting access control into existing doors, or do I need new doors?
Retrofit is one of its two stated uses, alongside new construction. Because it goes in through a simple mortise cutout in the existing frame or lock stile rather than requiring a full lock body prep, it can be added to doors already hanging. Choose the model by substrate and release: WD for wood applications, DMR/DMR1/DDMR1 where you need a mechanical release, and add BPS or DPS if the existing panel expects monitoring.
10) What's the difference between the plain fail-safe SDC 1091 and the DL deadlocking model?
The DL model is deadlocking fail-safe: the bolt deadlocks when projected, so it resists being forced back. The standard Fail-Safe model releases on power loss without that deadlocking feature. For a perimeter or high-value opening where someone could work at the bolt, DL is the one to specify; for an interior door tied to egress, plain fail-safe is usually enough.
11) What finishes does the SDC Spacesaver bolt lock come in to match the rest of my hardware?
Eleven, by BHMA number: 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. For a building already standardized on 626 dull chrome or 630 satin stainless, which is where most commercial work lands, you're covered. Most of the lock body sits concealed in the mortise, so the finish is about the exposed strike and trim matching the other openings.
How fast can I get the SDC 1091AIV 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 1091AIV come with a warranty?
Absolutely. The SDC 1091AIV 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 1091AIV?
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 1091AIV from ZenSupply?
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