Sargent 28-DLU15 Passage Tubul...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$343.62
$294.94
Sargent 28-DLU15 Passage Tubular Lock with Coastal Lever Design

Sargent 28-DLU15 Passage Tubular Lock with Coastal Lever Design

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Model: 28-DLU15 TOG 26D
From the DL Series Collection
$343.62
$294.94
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$343.62
$294.94
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Sargent DL Series Passage Tubular Lock with Coastal Lever Design and 3-Hour Fire Rating

Professional Tubular Lock Solution for Interior Applications

The Sargent DL Series Passage Tubular Lock features the elegant Coastal Lever Series design with accommodating door thicknesses from 1-3/8" to 1-3/4" and adjustable backset from 2-3/8" to 2-3/4". This non-handed tubular lock includes 1/2" latchbolt throw with T-Strike curved lip strike and is UL-cUL fire-rated up to 3 hours with full ADA compliance for professional commercial and high-end residential applications.

Professional Features & Benefits

  • Versatile Door Compatibility: Accommodates door thickness from 1-3/8" to 1-3/4" with adjustable backset from 2-3/8" to 2-3/4" for flexible installation options.
  • Fire-Rated Performance: UL-cUL listed for up to 3-hour fire rating applications, meeting stringent commercial building requirements.
  • ADA Compliance: Meets Americans with Disabilities Act requirements and ICC A117.1 standards for accessible design in commercial applications.
  • Non-Handed Design: Universal installation eliminates the need to specify door handing, reducing inventory requirements and installation complexity.
  • Robust Tubular Construction: Tubular design with 1/2" latchbolt throw and T-Strike curved lip strike for reliable latching performance.
  • Coastal Lever Series Styling: Features decorative hardware from the Studio Collection and Coastal Series for high aesthetic appeal in professional environments.
  • Manufacturer Warranty: 1-year limited warranty provides added confidence and protection for professional 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, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function 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 Residential Apartments and Condominiums
  • Interior Office and Conference Room Access
  • Hospitality and Hotel Applications

Why Choose Sargent Quality?

Sargent DL Series tubular locks deliver professional-grade reliability with UL-cUL fire rating up to 3 hours and comprehensive ADA compliance certification. The 1-year limited warranty and robust tubular construction with 1/2" latchbolt throw ensure dependable performance in demanding commercial and high-end residential applications where both style and function 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 TOG 26D – Frequently Asked Questions

1) Can I use a Sargent DL Series passage lever on a fire-rated door?
Yes. The DL Series passage lock is UL-cUL listed for openings rated up to 3 hours, which covers stair, corridor, and cross-corridor doors in most commercial buildings. Passage function means the latch is always retractable from both sides, so it also satisfies egress on a rated door where no locking is wanted.
2) Do I need to specify handing when I order a Sargent 28-DLU15 passage lever?
The lock itself is non-handed, so the latch and chassis work on either swing. The order form still asks for a hand (left or right) because the Coastal lever trim is called out by hand. Pick the hand that matches the door as you stand on the pull side; you are not committing the lock function, only the lever orientation.
3) Which backset does the Sargent DL passage lock use, and does it work with an existing 2-3/4 inch bore?
The DL Series latch is adjustable from 2-3/8 inch to 2-3/4 inch, the two backsets nearly every commercial door is prepped for. So it drops onto an existing 161 prep at either backset without a separate part number for each. Set the latch before you slide the chassis in.
4) Is a passage lever the right choice for an office or conference room door, or do I need a lock?
Passage is non-keyed and never locks. The lever retracts the latch from both sides at all times, which is what you want on a hall, closet, or conference door that just needs to stay shut. If someone needs to secure the room, that is a different function: an entry/office lock like the Falcon B511CP6D, a storeroom lock like the Cal-Royal AG05, or a privacy set for a restroom. Ordering passage for a room that needs locking is the most common mistake on this part.
5) What is a comparable Grade 1 passage lever if I cannot use the Sargent DL Series?
Two close equivalents. The Falcon K101 is a Grade 1 non-handed cylindrical passage lock, fire rated, and it takes a wider 1-3/8 to 2-1/4 inch door range if your leaf is thicker than 1-3/4 inch. The Corbin Russwin CL3110 is a Grade 1 vandal resistant passage lever, also fire rated, but it starts at 1-3/4 inch doors so it will not go on a 1-3/8 inch leaf. Neither carries the Coastal decorative trim.
6) What is the closest Grade 1 cylindrical passage lever to the Sargent 28-DLU15 from another manufacturer?
The Falcon K101 is the nearest straight equivalent. Both are Grade 1 non-keyed passage locks in a cylindrical lever format, and both are fire rated. The K101 is a heavy duty K Series lock covering doors 1-3/8 inch to 2-1/4 inch thick; the Sargent 28-DLU15 is a medium duty DL Series lock. The Corbin Russwin CL3110 is a second Grade 1 fire-rated passage lever, built vandal resistant on the CL3100 Series, for doors 1-3/4 inch to 2 inch thick. If the door is thinner than 1-3/4 inch, the Falcon K101 covers that range and the CL3110 does not.
7) The Sargent 28-DLU15 is passage only. What do I order for the same opening if the room needs to lock?
Passage means non-keyed latching with no locking function, so a different function is required. For a bathroom or bedroom, the Hager 2540 is a Grade 2 privacy lock with the Withnell lever for doors 1-3/8 inch to 2 inch. For a keyed office or entry door, the Hager 2525 is a Grade 2 cylindrical entry lock and the Dexter C1000 entry/office is a Grade 1 clutching keyed lever for doors 1-3/8 inch to 1-3/4 inch. For a storeroom that stays locked, the Cal-Royal AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt, and the Hager 2580 is a Grade 2 storeroom lock. For a classroom, the Dexter C1000 classroom is Grade 1 and keyed.
8) Can I use a dummy lever in place of a Sargent 28-DLU15 passage lock?
No. A dummy trim is a fixed pull with no latch behind it, so it will not hold a door closed. The Sargent 28-DLU15 is a passage cylindrical lock with a working latchbolt. Dummies such as the BEST 9K 1DT Grade 1 heavy duty single dummy trim, the BEST 7KC 1DT Grade 2 medium duty single dummy, the Accentra 455LN Augusta Grade 1 single dummy, and the Baldwin Estate 5103 half dummy are for inactive leaves of a pair or closet doors held by a ball catch. Note the Baldwin 5103 half dummies are handed, ordered left hand or right hand, while the Sargent 28-DLU15 is a non-handed lock.
9) I need a passage lever on a door thicker than 1-3/4 inch. What works there?
The Sargent 28-DLU15 covers doors 1-3/8 inch to 1-3/4 inch thick. For thicker doors, the Falcon K101 is a Grade 1 fire-rated passage lock rated 1-3/8 inch to 2-1/4 inch, the Hager 2510 Grade 2 passage lever covers 1-3/8 inch to 2 inch, and the Arrow GL01 Grade 2 passage lock covers 1-3/4 inch to 2 inch. The Corbin Russwin CL3110 Grade 1 passage lever is also rated 1-3/4 inch to 2 inch. Measure the leaf at the lock edge before ordering, since these ranges are where they differ.
10) Is the Sargent DL Series passage lock ADA compliant for a lever on an accessible route?
Yes. The DL Series meets ADA requirements and ICC A117.1 for accessible operating hardware, and the lever design itself is what does it, no tight grasping or wrist twisting to operate. That covers the standard lever requirement on accessible doors in commercial and multi-family work.
11) What lever and rose styles can I get on the Sargent Coastal Series DL passage lock?
Four Coastal levers: Gulfport, Rockport, Sanibel, and Yarmouth. Each pairs with one of four roses, CO, E2, O, or TO, so you can run a square or round trim look across a project. On a multi-door job, lock the lever and rose combination down first, then order finishes to match, because the trim is what visually ties the passage doors to the keyed openings.
12) What is the antimicrobial SG option on the Sargent DL lever, and where would I use it?
SG is MicroShield, an antimicrobial powder coat applied to the lever and trim. It is an order option, not a separate model. Healthcare, education, and hospitality specs are where it usually gets called out, on the high-touch passage doors people push through all day. If it is not in the spec, the standard finishes are the ones to order.
13) Can I match the Sargent DL passage lever to oil rubbed bronze or black hardware already on the job?
Fourteen finishes are offered, including 10B dark oxidized satin bronze oil rubbed, 10BE and 10BL bronze variants, 20D dark statuary bronze, BSP black suede powder coat, and WSP white suede. Brass runs 03 bright and 04 satin, nickel 14 bright and 15 satin, chrome 26 bright and 26D satin, plus 09 bright bronze and 10 satin bronze. That covers the usual commercial 26D and the decorative bronzes on higher-end residential work.
14) Is the Sargent DL Series a Grade 1 lock, and is it heavy duty enough for a school corridor?
Grade 1 by rating, but catalogued as medium duty. That is a fair reading of the part: the Coastal trim is a decorative Studio Collection lever, so it suits offices, conference rooms, hotel corridors, and multi-family interiors. For a genuinely abusive opening, a heavy duty passage set such as the Falcon K101 or the Falcon T101 is the tougher pick.
15) I need a cheaper passage lever for apartment interior doors. What else works?
Grade 2 passage levers cover interior apartment and hall doors well. The Accentra 5301LN Augusta and the Accentra 4601LN are Grade 2 passage cylindrical levers, the Falcon B101 is a Grade 2 non-handed passage lever, and the Hager 2510 with the Withnell lever is Grade 2 across a 1-3/8 to 2 inch door range. For residential-grade work the Kwikset 200BRNL Breton is Grade 3 on 1-3/8 to 1-3/4 inch doors. Step down in grade only where the traffic justifies it.
16) I need a lever on a door that does not latch at all. Is a passage lock what I want?
No. A passage lock has a working latchbolt, so it keeps the door closed. For a door with no latch, on an inactive leaf of a pair or a false front on a closet, you want a dummy trim: the BEST 9K 1DT single dummy trim is the Grade 1 option, the BEST 7KC 1DT is Grade 2, and the Accentra 455LN Augusta is a Grade 1 single dummy lever. Those mount surface trim only, with no bore for a latch.
17) Can the Sargent 28-DLU15 be keyed or keyed alike with the rest of my building?
No. The DL passage lock is non-keyed, with no cylinder and no provision for one, so it cannot be added to a keying schedule. Standardize your keyed openings on a keyed function lock and use the passage set only where nothing needs to lock. Matching the Coastal lever and rose across both keeps the look consistent even though the keying does not carry over.
18) Is there a Grade 2 passage lever I can use on light-traffic interior doors instead of a Grade 1 lock?
Yes. The Falcon B101 is a Grade 2 medium duty cylindrical passage lever with a non-handed design, and the Accentra 5301LN Augusta is a Grade 2 passage lever on the 5300 Series. The Hager 2510 with the Withnell lever is a Grade 2 passage lever covering doors 1-3/8 inch to 2 inch thick, and the Arrow GL01 is a Grade 2 passage lock with the Sierra lever for doors 1-3/4 inch to 2 inch. The Sargent 28-DLU15 is Grade 1. Where a building standard calls out ANSI/BHMA Grade 1, the Sargent meets it and the Grade 2 locks do not.
19) What passage lever should I use if I want a decorative look rather than a commercial lock?
The Baldwin Estate 5103 passage lever with the 5048 rose is a decorative passage leverset. Bravura offers passage leversets in several trim styles: the Miramar and Atlanta with round trim, the Orlando with round trim, and the Tampa with square trim, all Grade 2. The Callan Asheville is a Grade 3 passage leverset in satin nickel. The Sargent 28-DLU15 carries a decorative angle too, offered in four Coastal lever styles, Gulfport, Rockport, Sanibel and Yarmouth, on CO, E2, O and TO roses, with Grade 1 construction and finishes from bright brass through satin chrome and black or white suede powder coat.
20) Is a knob lock an acceptable swap for the Sargent 28-DLU15 lever?
Only where accessibility rules do not apply. The Sargent 28-DLU15 uses a lever handle and meets ADA and ICC A117.1 requirements for accessible operation. Knob products such as the Arrow MK02-TA Tudor knob privacy lock, the Arrow HK11 ball knob entrance lock and the Arrow MK33 ball knob asylum lock require grasping and twisting. Those knob locks are also different functions, privacy, entrance and asylum, rather than passage. On any door under an ADA scope, specify a lever.
21) What is the difference between a Sargent 28-DLU15 and a Design Hardware X75 passage lever?
Both are Grade 1 passage lever locksets. The Design Hardware X75 is an X Series flat lever rated for 1-3/4 inch doors, and the companion Design Hardware J75 is the Grade 2 J Series version of the same flat lever, also for 1-3/4 inch doors. The Sargent 28-DLU15 fits doors 1-3/8 inch to 1-3/4 inch with a backset adjustable from 2-3/8 inch to 2-3/4 inch, is non-handed, and is offered in four Coastal lever profiles across fourteen finishes. Choose on lever styling, finish range and the door thickness you actually have.
22) Is a keypad or electronic lever an alternative to the Sargent 28-DLU15?
They solve a different problem. The Sargent 28-DLU15 is a non-keyed passage lock, so the door always opens from both sides and there is no access control. Code-entry alternatives include the Lockey 1150 heavy duty mechanical keypad lever set with double combination for doors 1-1/8 inch to 2 inch, the Delaney LP250 Grade 2 electronic keypad leverlock, and the Emtek Classic keypad leverset. For powered access control on a Grade 1 cylindrical chassis, the Corbin Russwin CL33903 is a fail safe electrified lever running 12VAC/DC on doors 1-3/4 inch to 2 inch.
23) Can the Sargent 28-DLU15 be used as exit device trim?
No. It is a bored cylindrical lockset that installs in a door with a cross-bore and latch prep, not trim that mounts to an exit device chassis. For pushpad exit device trim, the Corbin Russwin 585F715 is a Grade 1 lock lever for the ED8000 pushpad exit device built on the CL3300 Series for doors 1-3/4 inch to 2 inch, and the Imperial USA ED-EL500HD is a heavy duty escutcheon lever trim in entry function for the ED-500 Series. Match the trim to the exit device family already on the door.
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Does the Sargent 28-DLU15 TOG 26D come with a warranty?
Absolutely. The Sargent 28-DLU15 TOG 26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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