Sargent DLU15-Standard Passage...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$332.00
$322.91
Sargent Sargent DL Series - Passage (DLU15) Tubular Lock - Standard Lever Series SGT-DLU15-Standard

Sargent DLU15-Standard Passage Tubular Lock with Standard Lever - Grade 1 Commercial Hardware

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Model: 28-DLU15-TO-A-26D
From the DL Series Collection
$332.00
$322.91
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$332.00
$322.91
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Sargent DL Series Grade 1 Passage Tubular Lock with Standard Lever - 2 3/4" Backset Commercial Hardware

Professional Passage Lock Solution for Commercial Applications

The Sargent DL Series tubular lock combines style and function with ease of installation, exceeding the expectations of demanding architects, design professionals, and building contractors. This Grade 1 commercial passage lock features a 2 3/4" standard backset, accommodates door thickness from 1 3/8" to 1 3/4", and includes a 1/2" latchbolt throw for reliable operation. UL-cUL fire-rated up to 3 hours and ADA compliant for accessibility requirements.

Professional Features & Benefits

  • Door Compatibility: Standard 2 3/4" backset with adjustable range from 2 3/8" to 2 3/4" accommodates various door preparations.
  • Door Thickness Range: Fits doors from 1 3/8" minimum to 1 3/4" maximum thickness for versatile installation options.
  • Grade 1 Commercial Construction: ANSI/BHMA A156.4 Grade 1 rated for heavy-duty commercial applications and high-traffic environments.
  • Non-Handed Design: Universal installation eliminates field confusion and reduces inventory requirements for contractors.
  • Fire Rating Compliance: UL-cUL fire-rated up to 3 hours for code compliance in fire-rated door assemblies.
  • ADA Accessibility: Americans with Disabilities Act compliant design meets accessibility requirements for commercial buildings.
  • Decorative Hardware Options: Available with Studio Collection, Coastal Series, and standard trim options including roseless configurations.
  • Manufacturer Warranty: 10 Year Limited warranty provides confidence and protection for commercial installations.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness between 1 3/8" and 1 3/4", and backset requirements from 2 3/8" to 2 3/4".
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door surfaces for tubular lock installation.
  3. Prepare door by drilling required holes per manufacturer specifications, ensuring proper alignment for smooth operation.
  4. Install tubular lock mechanism and secure all mounting hardware per manufacturer torque specifications.
  5. Adjust latchbolt operation for proper 1/2" throw and verify smooth lever operation throughout full range of motion.
  6. Test passage function to verify proper operation and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Multi-Tenant Residential Properties
  • High-End Apartment and Condominium Projects
  • Government and Municipal Buildings
  • Interior Office and Conference Room Applications

Why Choose Sargent Quality?

Sargent DL Series tubular locks deliver professional-grade reliability with Grade 1 commercial construction rated for heavy-duty applications. UL-cUL fire-rated up to 3 hours and backed by 10 Year Limited warranty coverage. Engineered for demanding commercial applications where dependable performance and code compliance are essential.

Product Specs

Series:
DL Series
Grade:
Grade 1
Keyed Function:
Non-Keyed
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Subcategory:
Bored Locksets
Keyed:
No
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Lock Function:
Passage
Product Type:
Leversets
Duty Level:
Medium Duty
Handle Type:
Lever
Product Attribute:
Cylindrical Locks
Product Function:
Passage/Hall/Closet
Product Category:
Mechanical Locks
Collection:
DL Series
Department:
Door Hardware

Sargent 28-DLU15-TO-A-26D – Frequently Asked Questions

1) Do I have to specify handing on a Sargent DL Series passage lever?
Handing is a required selection, left hand or right hand, when you order the DLU15. The lock body itself is non-handed, so the choice is about which way the lever points once it is on the door. Stand outside the opening: if the hinges are on your left it is a left hand door.
2) Can I use a Sargent DL passage lock on a fire rated door?
Yes. The DL Series tubular lock is UL-cUL fire rated up to 3 hours, so it is usable in a rated opening. It is also ADA compliant, which the lever shape supports, and it carries an ANSI/BHMA A156.4 Grade 1 rating for heavy traffic.
3) Does the Sargent DLU15 lock or key at all?
No. This is a passage function lock, non-keyed, with no cylinder and no way to secure the door. The lever always retracts the latch from both sides. Use it on hall, closet and conference room doors where you only want a latched door. If you need the room to lock, you need a privacy, entry, classroom or storeroom function instead.
4) I need a Grade 1 passage lever for a 2 inch thick door. Does the Sargent DL work?
No. The DL Series tops out at 1-3/4 inches. For a 2 inch leaf, the Corbin Russwin CL3110 passage lock covers 1-3/4 to 2 inches and is Grade 1 and fire rated, and the Falcon K101 covers 1-3/8 to 2-1/4 inches at Grade 1. Either one solves the thickness where the DL will not.
5) What is the closest Grade 1 alternative to the Sargent DLU15 passage lever if the door is 2 inches thick?
The Sargent DLU15 is a Grade 1 cylindrical passage lever with a lever handle and non-keyed function, and it is prepared for doors from 1 3/8 inch to 1 3/4 inch. For a 2 inch door, the Falcon K101 is a Grade 1 heavy duty passage cylindrical lock with a door thickness range of 1-3/8 inch to 2-1/4 inch, and the Corbin Russwin CL3110 is a Grade 1 passage/closet cylindrical lever lock with a door thickness range of 1-3/4 inch to 2 inch. Both hold passage function, so the door swings free from either side with no key and no locking.
6) The door needs to lock. What replaces a Sargent DLU15 passage lever when the room has to be secured?
The Sargent DLU15 is passage function and non-keyed, so it never locks - the lever always retracts the latch from both sides. For an opening that has to be secured, keyed functions in the comparable set include the Dexter C1000 Grade 1 entry/office cylindrical lever with a 1-3/8 inch to 1-3/4 inch door thickness range, the Dexter C1000 Grade 1 classroom lever, and the Cal-Royal AG05 Grade 2 storeroom lever with a deadlocking latchbolt. For a bathroom or bedroom that needs privacy rather than a key, the Hager 2540 is a Grade 2 cylindrical lock with a Withnell lever.
7) Is a dummy lever the same thing as a Sargent DLU15 passage lever?
No. The Sargent DLU15 is a cylindrical passage lock - it carries a working latchbolt that the lever retracts, so it latches the door shut. A dummy trim has no latch and no mechanism; it is a fixed pull mounted to the face of the door, used on an inactive leaf or a closet that catches on a ball catch. Dummy trims in the comparable set include the BEST 9K Series 1DT Grade 1 single dummy trim, the BEST 7KC Series Grade 2 single dummy trim, and the Accentra 455LN Augusta Grade 1 single dummy. Ordering one of those in place of a DLU15 leaves the door with nothing to hold it closed.
8) What lever and rose styles can I get on the Sargent DL Series passage lock?
Eight lever designs (A, B, E, F, J, L, P and W) and four rose options (CO, E2, O and TO). Roseless and decorative Studio Collection and Coastal Series trims are also part of the DL offering. If you are matching levers already hanging elsewhere in the building, the lever letter and rose code on the existing hardware is what you match to.
9) Will a 1/2 inch latchbolt throw catch in my existing strike?
The DL Series latch throws 1/2 inch, which is the normal throw for a cylindrical latch and matches standard ANSI strike prep. If your existing frame takes a standard cylindrical latch, this engages the same way. Where a gap between door and frame has opened up from settling or a worn hinge, a 1/2 inch throw can start to skip the keeper, and that is a frame problem rather than a lock problem.
10) What finishes does the Sargent DLU15 passage lever come in for matching existing building hardware?
Sixteen finishes, covering the common commercial codes: 26D satin chrome and 32D satin stainless for institutional work, 10B oil rubbed bronze plus 10BE and 10BL variants, 03 and 04 brass, 09 and 10 bronze, 14 and 15 nickel, 20D dark statuary bronze, 26 bright chrome, 32 bright stainless, and BSP black or WSP white suede powder coat. Match the BHMA number on your existing hardware rather than the name, since finish names vary between makers.
11) How is a Grade 1 Sargent DL passage lever different from a Grade 2 passage lever like the Falcon B101 or Hager 2510?
Grade is the traffic rating. The DL Series is Grade 1 under ANSI/BHMA A156.4, the top commercial tier, which is what a spec for a school corridor or hospital door usually calls out. The Falcon B101 and the Hager 2510 are both Grade 2 passage levers, fine for lighter traffic. If you want Grade 1 passage from another brand, the Falcon K101 and the Corbin Russwin CL3110 are both Grade 1 passage locks, and the CL3110 is also fire rated.
12) Should I order the Sargent DLU15 passage lock or a dummy lever for a closet door?
Depends on whether the door needs to stay shut. The DLU15 has a working latch, so the lever retracts a bolt that holds the door closed against the frame. A dummy lever has no latch at all and is just a pull, held shut by a ball catch or magnet. For a closet with a strike in the frame, the passage lock is the right call. For a false or inactive leaf, look at a dummy trim like the BEST 9K 1DT, which is Grade 1 non-keyed dummy.
13) Is the Sargent DL a mortise lock or a bored cylindrical lock?
It is a cylindrical, tubular lock, meaning it installs into a round cross bore through the door face plus an edge bore for the latch. No pocket has to be routed into the door edge, which is what a mortise lock requires. If your doors are already prepped for a mortise case, this is not a drop-in and you want a mortise lock instead.
14) What is a lighter duty passage lever than the Sargent DLU15 for a low traffic interior door?
The Sargent DLU15 is an ANSI/BHMA Grade 1 passage lever. Where a lower grade suits the opening, the Falcon B101 is a Grade 2 medium duty cylindrical passage lever with a non-handed design, the Accentra 5301LN Augusta is a Grade 2 cylindrical passage/closet lever, and the Hager 2510 is a Grade 2 passage cylindrical lever with a door thickness range of 1-3/8 inch to 2 inch. All four are non-keyed passage function, so the operation at the door is the same and the difference is the ANSI grade and the trim design.
15) Which passage lever holds a Grade 1 rating besides the Sargent DLU15?
The Sargent DLU15 is a Grade 1 cylindrical passage lever. Other Grade 1 passage levers include the Falcon K101, a heavy duty non-handed passage cylindrical lock that is fire rated; the Falcon T101, a heavy duty passage lever with pressure release technology; the Corbin Russwin CL3110, a vandal resistant passage/closet lever that is fire rated; and the Design Hardware X75, a Grade 1 passage lever lockset with a flat lever for 1-3/4 inch doors. On a facility standardizing to Grade 1 for corridor and office doors, any of these meets the grade line on the spec.
16) What passage lever suits a residential grade interior door instead of the Sargent DLU15?
The Sargent DLU15 is a Grade 1 commercial cylindrical passage lever. For residential interior openings, the Kwikset 200BRNL Breton passage lever set is Grade 3 for doors 1-3/8 inch to 1-3/4 inch, the Callan Asheville is a Grade 3 passage leverset, and the Bravura Atlanta and Bravura Orlando are Grade 2 passage leversets with round trim. The Baldwin Estate 5103 passage lever with 5048 rose is another passage option where the trim styling drives the choice.
17) Can a Sargent DLU15 be swapped for a keypad lever on a door that needs code access?
The Sargent DLU15 is a non-keyed passage lever with no credential of any kind. Where the same door needs code entry, the Lockey 1150 is a heavy duty mechanical keypad lever set with double combination and a passage function, fitting doors from 1-1/8 inch to 2 inch, and the Delaney LP250 is a Grade 2 electronic keypad leverlock. Both replace the DLU15 at the same bored prep in concept but add a code mechanism the passage lever does not carry, so verify the existing door prep against the keypad unit before ordering.
18) Is a knob lock a substitute for the Sargent DLU15 lever?
The Sargent DLU15 uses a lever handle, which is what carries its ADA compliance for accessible openings. Knob-trimmed cylindrical locks in the comparable set include the Arrow MK02-TA privacy lock with a Tudor knob and the Arrow HK11 entrance lock with a ball knob. They occupy a similar bored prep but a knob does not answer an ADA lever requirement, so on a corridor or office door written to accessibility the lever trim is the one that matches.
19) What replaces a Sargent DLU15 on an electrified opening tied to access control?
The Sargent DLU15 is a mechanical non-keyed passage lever with no electrical provision. On a door running to an access control panel, the Corbin Russwin CL33903 is a Grade 1 fail safe electrified cylindrical lever lock at 12VAC/DC for doors 1-3/4 inch to 2 inch, available with an NZ lever and D rose. That change brings power to the door, so the opening needs a transfer hinge or power transfer and a wiring path the passage lever never required.
20) Does an exit device lever trim work in place of a Sargent DLU15?
No. The Sargent DLU15 is a complete cylindrical passage lock with its own latchbolt. The Corbin Russwin 585F715 is a Grade 1 lock lever for the ED8000 pushpad exit device and the CL3300 cylindrical lock series, and the Imperial USA ED-EL500HD is a heavy duty escutcheon lever trim for entry function. Those are trim that mounts to an existing device or lock chassis, not a standalone lock, so a bare door prepped for a bored lockset needs the DLU15 rather than trim.
21) Are installation instructions and a parts breakdown available for the Sargent DL lever lock?
Yes. Sargent publishes DL Lever Lock installation instructions and a DL Series parts manual, both of which give the door prep template and the exploded parts view you need for a replacement lever, rose or latch. Worth pulling the parts manual before ordering spares, since lever and rose parts are called out by the same letter codes used on the order.
22) Which Accentra passage lever compares to the Sargent DLU15?
The Sargent DLU15 is a Grade 1 cylindrical passage lever in the DL Series with lever trim. Accentra offers two passage/hall/closet cylindrical levers with Augusta trim: the 5301LN in the 5300 Series and the 4601LN in the 4600 Series, both Grade 2. A distributor pricing an equivalent should note the DL Series unit is Grade 1 while both Augusta passage sets are Grade 2, and the DL Series is ordered through its own lever and rose designations.
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Does the Sargent 28-DLU15-TO-A-26D come with a warranty?
Absolutely. The Sargent 28-DLU15-TO-A-26D 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 Sargent 28-DLU15-TO-A-26D?
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