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

Sargent DLU15-3-Standard Exit/Communicating Tubular Lock with Standard Lever - Grade 1 Commercial

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Model: 28-DLU15-3-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 Exit/Communicating Tubular Lock with Standard Lever

Professional Tubular Lock Solution for Commercial Applications

The Sargent DL Series tubular lock delivers Grade 1 commercial performance with versatile exit/communicating functionality. Designed for 1 3/8" to 1 3/4" door thickness with standard 2 3/4" backset, this non-handed lock features 1/2" latchbolt throw and includes 2 keys. UL-cUL fire-rated up to 3 hours and ADA compliant for comprehensive code compliance in demanding commercial environments.

Professional Features & Benefits

  • Door Compatibility: Accommodates 1 3/8" to 1 3/4" door thickness with 2 3/8" to 2 3/4" backset range for versatile installation options.
  • Grade 1 Commercial Rating: ANSI/BHMA Grade 1 certification ensures heavy-duty performance for high-traffic commercial applications.
  • Fire Safety Compliance: UL-cUL fire-rated up to 3 hours provides critical fire protection in commercial building applications.
  • Universal Installation: Non-handed design with 1/2" latchbolt throw simplifies installation and reduces inventory requirements.
  • Accessibility Compliance: ADA and ICC A117.1 compliant design meets accessibility requirements for commercial facilities.
  • Heavy-Duty Construction: Grade 1 rated mechanism engineered for 250 lbs. door weight capacity in demanding commercial environments.
  • Decorative Flexibility: Compatible with Studio Collection, Coastal Series, and standard trim options for aesthetic versatility.
  • Complete Installation Package: Includes T-Strike curved lip strike and 2 keys for immediate installation readiness.

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 between 2 3/8" and 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 for the tubular lock mechanism and latchbolt.
  4. Install the tubular lock mechanism and secure all mounting hardware per manufacturer torque specifications.
  5. Install the included T-Strike curved lip strike on the door frame ensuring proper alignment with the 1/2" latchbolt throw.
  6. Test lock operation to verify proper function of exit/communicating features 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
  • Retail Establishments
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings
  • High-End Apartment and Condominium Projects

Why Choose Sargent Quality?

Sargent DL Series tubular locks deliver professional-grade reliability with Grade 1 commercial certification and UL-cUL fire rating up to 3 hours. The non-handed design and comprehensive code compliance including ADA and ICC A117.1 standards ensure dependable performance in demanding commercial applications. Engineered for heavy-duty use with 250 lbs. door weight capacity and complete installation package for professional results.

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:
Exit/Communicating
Product Type:
Leversets
Duty Level:
Medium Duty
Handle Type:
Lever
Product Attribute:
Cylindrical Locks
Product Function:
Exit/Communicating
Product Category:
Mechanical Locks
Collection:
DL Series
Department:
Door Hardware

Sargent 28-DLU15-3-TO-A-26D – Frequently Asked Questions

1) What does the exit/communicating function on the Sargent DL Series DLU15-3 actually do?
Exit/communicating means the lever always turns freely from both sides and there is no key and no cylinder. The DLU15-3 is a non-keyed lock, so it latches the door shut and lets anyone operate it from either side. Use it where you need a latched door that never locks: a corridor between two suites, a stair-side communicating door, a connecting door between rooms. If you need the outside lever to lock, this is the wrong function and you want an entrance, storeroom, or classroom lock instead.
2) Will the Sargent DL Series tubular lock fit a 1-3/8 inch door?
Yes. The DL Series lever lock covers 1-3/8 inch through 1-3/4 inch doors, which takes in both the standard commercial 1-3/4 leaf and the thinner 1-3/8 interior doors common in older buildings. Above 1-3/4 inches it is out of range, so a 2 inch door needs a different lock.
3) Do I have to specify handing on the Sargent DL Series lever lock?
Handing is a required selection, left hand or right hand, so have the door in front of you before ordering. Stand on the outside of the door: if the hinges are on your left it is left hand, hinges on the right is right hand. The lever and latch are supplied to suit.
4) Can I use the Sargent DL Series lever lock on a fire rated door?
Yes. The DL Series lever lock is UL-cUL fire rated up to 3 hours, so it can go on a rated opening up to that rating. It is also a latching lever set, which is what a rated door needs to stay positively latched.
5) What is the closest Grade 1 non-keyed cylindrical lever lock to the Sargent DL Series if I need a different brand?
For a Grade 1 non-keyed cylindrical lever in a commercial opening, the Falcon K101 is the nearest peer. It is a Grade 1 heavy duty passage cylindrical lock with non-handed levers, fire rated, covering 1-3/8 inch to 2-1/4 inch doors. The Sargent DL Series is likewise a Grade 1 non-keyed cylindrical lever lock. The functional difference matters: the Sargent is an exit/communicating function, while the K101 is passage/hall/closet, so the K101 latch is always free from both sides rather than serving a communicating door pair. Corbin Russwin CL3110 is another Grade 1 non-keyed cylindrical lever, vandal resistant and fire rated, for 1-3/4 inch to 2 inch doors.
6) My door is 2 inches thick. Which cylindrical lever lock covers that?
The Falcon K101 is rated for 1-3/8 inch to 2-1/4 inch doors and is a Grade 1 heavy duty non-handed passage lock. The Corbin Russwin CL3110 covers 1-3/4 inch to 2 inch doors in Grade 1 passage/closet, vandal resistant and fire rated. The Dexter C1000 asylum function lock covers 1-3/8 inch to 2 inch in Grade 1. On the lighter side, the Hager 2510 passage lever spans 1-3/8 inch to 2 inch in Grade 2. The Sargent DL Series is built for 1 3/8 inch to 1 3/4 inch doors, so a 2 inch leaf calls for one of the wider-range locks.
7) Can I substitute a dummy lever for the Sargent DL Series on an inactive leaf?
No. A dummy trim has no latch at all; it is a pull only. The BEST 9K Series 1DT is a Grade 1 non-keyed heavy duty single dummy trim cylindrical lever, and the Accentra 455LN Augusta is a Grade 1 heavy duty single dummy cylindrical lever. Both are correct for a truly inactive leaf that never latches. The Sargent DL Series is a cylindrical lock with an operating latchbolt in an exit/communicating function, so it holds the door closed; a dummy will not. If the leaf latches, keep the DL Series.
8) The opening needs a key on the outside. What takes the place of the Sargent DL Series there?
The Sargent DL Series is non-keyed, so a keyed opening needs a different lock. In Grade 1, the Dexter C1000 series covers entry/office, classroom, and classroom security functions, all keyed with clutching levers for 1-3/8 inch to 1-3/4 inch doors. The Corbin Russwin CL33903 is a Grade 1 electrified fail safe lever at 12VAC/DC for 1-3/4 inch to 2 inch doors if the opening is access controlled. In Grade 2, the Cal-Royal AG05 is a storeroom lever with a deadlocking latchbolt for 1-3/8 inch to 1-3/4 inch doors, and the Hager 2580 is a Grade 2 storeroom lever with the Withnell design.
9) Does the Sargent DL Series lever meet ADA requirements for a public building?
The lever design is ADA and ICC A117.1 compliant, so it satisfies the operable-hardware requirement (no tight grasping, pinching or wrist twisting) for accessible routes. That is one reason the lever is specified over a knob in schools, healthcare and government work.
10) Is the Sargent DL Series lock heavy duty enough for a high traffic commercial corridor?
It carries an ANSI/BHMA Grade 1 rating, the highest of the three commercial grades, and Sargent lists it at medium duty within its own range with a 250 lb door weight capacity. That covers office corridors, schools, retail and multi-tenant residential. For an opening being abused all day, a heavy duty Grade 1 lock such as the Falcon K101 or the BEST 9K Series is the step up in the same cylindrical format.
11) What finishes and lever styles can I get the Sargent DL Series lock in to match the rest of my building?
Sixteen finishes are available, from the plated brasses and bronzes (03, 04, 09, 10, 10B, 10BE, 10BL, 20D) through nickel (14, 15), chrome (26, 26D) and stainless (32, 32D), plus Black Suede and White Suede powder coat. Eight lever designs (A, B, E, F, J, L, P, W) mount on four rose shapes: CO, E2, O and TO. If you are standardizing a floor, order the same lever, rose and finish code across every opening and the DL Series will match visually whatever function each door needs.
12) What comes in the box with the Sargent DLU15-3 tubular lock?
You get the lock with levers and roses on both sides, a T-strike curved lip strike, and 2 keys. Since this is the non-keyed exit/communicating function, everything you need for the opening is in the carton apart from door prep. There is no cylinder to buy and no keying to specify.
13) Cylindrical or mortise lock for a commercial communicating door?
A cylindrical lock like the DL Series drops into two bored holes, a 2-1/8 inch cross bore and a 1 inch edge bore, so it installs fast and retrofits any door already prepped for a bored lockset. A mortise lock needs a deep pocket routed into the door edge and is what you go to for higher security, more complex functions, or a deadbolt in the same case. For a door that just needs to latch and always open from both sides, the bored lock is the simpler and cheaper prep.
14) Is a dummy lever the same thing as the Sargent exit/communicating lock?
No, and this is a common mix-up. Exit/communicating on the DLU15-3 is a working latch: the lever retracts a 1/2 inch latchbolt and holds the door closed. A dummy lever, such as the BEST 7KC Series 1DT or the Baldwin Estate 5103 half dummy, is trim only. It screws to the face of the door, does not turn anything, and there is no latch. If the door needs to stay shut on its own, you need the latching lock, not the dummy.
15) I only need a Grade 2 lever for a light-traffic interior door, not a Grade 1 commercial lock. What should I use instead?
Step down to a Grade 2 cylindrical lever. The Falcon B101 is a Grade 2 medium duty cylindrical passage lever with non-handed design, and the Accentra 5301LN Augusta is a Grade 2 cylindrical lever in passage/closet function. The Hager 2510 is a Grade 2 passage cylindrical lever with the Withnell design covering 1-3/8 inch to 2 inch doors. All three are passage function, so the latch retracts freely from both sides, unlike the Sargent DL Series exit/communicating function.
16) For a patient room or detention-type door, is the Sargent DL Series the right lock or do I need an asylum function?
Asylum and institution openings are their own function. The Dexter C1000 asylum (F87) is Grade 1 for 1-3/8 inch to 2 inch doors, and the Arrow MK33-BD-CS is a heavy duty asylum lock with a ball knob and conventional cylinder in the Schlage C keyway. The Sargent DL Series is an exit/communicating function with a lever handle, which serves a communicating door pair rather than an asylum opening keyed on both sides.
17) Is a privacy lever an acceptable swap for the Sargent DL Series on a restroom door?
No, they are different functions. A privacy lock locks from the inside for a bed or bath door: the Arrow MK02-TA is a privacy lock with a Tudor knob, fire rated, for 1-3/4 inch to 2 inch doors, the Hager 2540 uses the Withnell lever for 1-3/8 inch to 2 inch doors, and the Kwikset 300BRNL Breton is a Grade 3 privacy lever for 1-3/8 inch to 1-3/4 inch doors. The Sargent DL Series is non-keyed in exit/communicating function, which has no privacy turn button, so it will not give a restroom the inside lock the code officer expects.
18) My doors are all 1-3/4 inch flush commercial leaves. Which Grade 1 passage lever fits alongside the Sargent DL Series?
The Design Hardware X75 is a Grade 1 passage lever lockset with a flat lever built for 1-3/4 inch doors. Its Grade 2 sibling, the Design Hardware J75, is the same flat lever passage set at Grade 2 for the same 1-3/4 inch thickness. The Sargent DL Series covers 1 3/8 inch to 1 3/4 inch, so it fits the same leaf while also handling thinner doors elsewhere in the building.
19) What are the knob-style alternatives if the job does not require a lever?
Knob versions in the set include the Arrow HK11-BB turn-pushbutton entrance cylindrical lock with a ball knob and conventional cylinder for 1-3/8 inch to 1-3/4 inch doors, the Arrow MK02-TA privacy lock with a Tudor knob for 1-3/4 inch to 2 inch doors, and the Arrow MK33-BD-CS asylum lock with a ball knob in the Schlage C keyway. The Sargent DL Series uses a lever handle and is ADA and ICC A117.1 compliant, which knobs generally are not for accessible routes.
20) I need matching Sargent locks for the rest of the doors, not just the communicating one. What else can I standardize on?
The DL Series is a family, so the same lever design, rose and finish is available across other functions in the series. Order the DLU15-3 for the communicating doors and the corresponding DL function for entrance, privacy or storeroom openings, keeping the lever letter and finish code the same on every one. That gives you a single look across the floor with the right function on each door.
21) I want a lever set that matches decorative interior trim rather than a commercial lock. What are the options?
For decorative interiors, the Baldwin Estate 5103 comes as a passage lever with the 5048 rose, and also in privacy and in left hand and right hand half dummy versions. Bravura offers passage leversets in Grade 2 across several trim designs: Miramar and Atlanta and Orlando with round trim, and Tampa with square trim. Deltana entry levers include the Claremont, and the Manchester, Morant, and Linstead for 1-3/8 inch to 2 inch doors. The Sargent DL Series is a Grade 1 commercial lock, and it carries its own decorative range through eight lever styles, four rose styles, and finishes from bright brass through satin stainless steel and suede powder coats.
22) Can I use a keypad lever instead of the Sargent DL Series to avoid issuing keys?
A keypad lever changes how the door is controlled, not just the trim. The Delaney LP250 is a Grade 2 electronic keypad leverlock, the Lockey 1150 is a heavy duty mechanical keypad lever set with double combination for 1-1/8 inch to 2 inch doors, and Emtek offers a Classic keypad leverset. The Sargent DL Series is a Grade 1 non-keyed mechanical cylindrical lock, so it is credential free by design in its exit/communicating function; a keypad unit adds code-based entry control and its own maintenance.
23) I need a Grade 1 lever but the budget spec says Grade 3 is acceptable for the back-of-house doors. What fits?
Grade 3 levers in the set include the Cal-Royal AUS00 entrance/office lever with a solid brass forged body for 1-3/8 inch to 1-3/4 inch doors, the Callan Artino entrance leverset, the Callan Asheville passage leverset in satin nickel, and the Callan Bennett entrance leverset with a deadbolt combo. Kwikset 200BRNL Breton is a Grade 3 passage lever for 1-3/8 inch to 1-3/4 inch doors. The Sargent DL Series sits at Grade 1 for high-traffic commercial use, so mixing grades within one facility means two different service parts inventories.
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Does the Sargent 28-DLU15-3-TO-A-26D come with a warranty?
Absolutely. The Sargent 28-DLU15-3-TO-A-26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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