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Command Access Narrow Door Loop with 3/8" Flexible Armored Conduit - NDL18 Series
Low-Cost Power Transfer Solution for Electronic Door Hardware
The Command Access NDL18 Narrow Door Loop provides a reliable, cost-effective method for transferring low voltage power from the door frame to electronic locking devices. This narrow surface mount door loop features durable powder coated finish construction with 3/8" diameter flexible armored conduit for secure power transmission. Commonly used with electric mortise and cylindrical locks, electric exit trims, and latch pullback devices, the NDL18 delivers dependable performance in commercial electronic access control applications.
Professional Features & Benefits
- Narrow Surface Mount Design: Space-efficient installation profile ideal for applications with limited mounting area or aesthetic requirements.
- Flexible Armored Conduit: 3/8" diameter flexible conduit provides secure power transfer while accommodating door movement and protecting wiring.
- Durable Construction: Powder coated finish available in aluminum or Duronatic finishes for long-lasting performance and corrosion resistance.
- Easy Installation: Pre-drilled holes in the base simplify mounting and reduce installation time for professional installers.
- Versatile Compatibility: Works with electric mortise locks, cylindrical locks, electric exit trims, and latch pullback devices for flexible application options.
- Cost-Effective Solution: Low-cost method for reliable power transfer eliminates the need for more complex wiring solutions.
- Manufacturer Warranty: 3-Year "No Hassle" Warranty provides added confidence and protection for commercial installations.
Technical Specifications
- Commercial/Residential: Commercial
- Department: Door Hardware
- Product Category: Electronic Access Controls
- Product Group: Electronic Access Controls
- Product Subgroup: Door Cords and Loops
- Product Type: Door Cords and Loops
- Series: NDL18 Series
- Subcategory: Narrow Door Loop
Professional Applications
- Commercial Building Security Systems
- Educational Institution Access Control
- Healthcare Facility Electronic Locks
- Retail Store Security Systems
- Office Building Entry Control
- Industrial Facility Access Points
- Multi-Tenant Residential Properties
Why Choose Command Access Quality?
Command Access door loop products deliver professional-grade reliability with durable powder coated construction and flexible armored conduit designed for demanding commercial applications. The 3-Year "No Hassle" Warranty demonstrates the manufacturer's confidence in product quality and provides peace of mind for commercial installations. Engineered for dependable power transfer where consistent electronic lock operation is essential.
Manufacturer Resources
Command Access Catalog
Product Specs
- Product Group:
- Electronic Access Controls
- Series:
- NDL18 Series
- Subcategory:
- Narrow Door Loop
- Commercial/Residential:
- Commercial
- Product Type:
- Door Cords and Loops
- Product Subgroup:
- Door Cords and Loops
- Product Category:
- Electronic Access Controls
- Department:
- Door Hardware
Command Access NDL-18A – Frequently Asked Questions
1) What does a Command Access NDL18 narrow door loop actually do, and when do I need one?
The NDL18 is a surface mounted power transfer loop that carries low voltage from the frame to the door, so anything electrified in the door leaf keeps getting power as the door swings. You need one any time the lock is electric and the power supply is not. Typical pairings are electric mortise and cylindrical locks, electric exit device trim, and latch pullback devices. The wire runs inside 3/8 inch flexible armored conduit that flexes with the door and protects the conductors.
2) Do I use a door loop or an electric hinge/power transfer for my electrified lock?
Two different approaches. A door loop like the NDL18 mounts on the surface of the frame and door and is the low cost route: no mortising, pre-drilled holes in the base, and you can add it to an opening that is already hung. A concealed transfer or electric hinge hides the wire completely but requires prep in the door and frame, which means pulling the door or specifying it before install. Pick the loop when you are retrofitting an existing opening or the budget matters more than the look; pick a concealed transfer when the wire cannot be visible.
3) Will the NDL18 door loop fit where there isn't much room on the frame?
That is what the narrow profile is for. The NDL18 is the narrow version of the surface mount loop, so it takes up less mounting width than a standard door loop, which helps on tight frames, narrow stops, and openings where the installer is fighting for space next to other hardware. It still uses 3/8 inch armored conduit for the flexible run.
4) What finishes does the Command Access NDL18 come in?
Two: aluminum and Duronatic. Both are powder coated. Aluminum is the one that blends with clear anodized aluminum frames and storefront; Duronatic is the dark bronze-toned option that matches dark anodized frames and bronze hardware. Picking the one closest to your frame finish matters more than matching the lock, because the loop sits on the frame and door edge where everyone sees it.
5) Does the NDL18 come with wire in it, or do I pull my own?
The NDL18 is the loop assembly itself: the narrow surface mount end blocks and the 3/8 inch flexible armored conduit between them, with pre-drilled holes in the base for mounting. Plan the job around your lock's own wiring requirement and your power supply, since the loop is the transfer path, not the power source. You will still need the low voltage supply and whatever access control head end is switching the lock.
6) Can I standardize on one door loop across a building with different electrified locks?
Yes, and that is the usual reason to spec it. The NDL18 works with electric mortise locks, electric cylindrical locks, electric exit device trim, and latch pullback devices, so one part number covers a mix of openings instead of a different transfer for each lock type. Order the finish per opening, aluminum or Duronatic, and the loop itself stays the same across the fleet.
7) Is the NDL18 door loop rated for commercial door traffic?
It is a commercial product, built for commercial access control openings: schools, healthcare, retail, office buildings, industrial facilities, and multi-tenant residential. The powder coated finish is there for corrosion resistance on doors that get cycled hard, and the armored conduit takes the flexing instead of the wire itself.
How fast can I get the Command Access NDL-18A 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 Command Access NDL-18A come with a warranty?
Absolutely. The Command Access NDL-18A 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 Command Access NDL-18A?
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 Command Access NDL-18A from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.