Marks USA 110L Privacy Knob Lo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$103.72
Marks USA 110L Privacy Knob Lockset - Grade 2, Round Knob

Marks USA 110L Privacy Knob Lockset — Grade 2, Round Knob, Satin Stainless Steel, 3-Hour Fire Rated

(No reviews yet) Write a Review

Model: 110L-32D-E4
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$103.72
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Marks USA 110L Privacy Knob Lockset — Grade 2, Round Knob, Satin Stainless Steel, 3-Hour Fire Rated

The Marks USA 110L is a BHMA-certified Grade 2 cylindrical privacy knob lockset engineered for commercial door applications requiring reliable bed/bath privacy function. Featuring a 2-1/4" diameter round knob, a 2-3/8" backset, and compatibility with door thicknesses from 1-5/8" to 1-7/8", this lockset delivers dependable performance in demanding environments. Certified to ANSI/BHMA A156.2 Grade 2 with a 3-Hour Fire Rating and UL Listed, the 110L is finished in Satin Stainless Steel for a professional, long-lasting appearance.

Key Features

  • Privacy Function (ANSI F75): Outside knob locked by pushbutton on inside knob/lever; rotating inside knob/lever or closing the door releases the button, with an emergency release in the outside knob/lever for safety.
  • Backset & Door Compatibility: Standard 2-3/8" backset accommodates door thicknesses of 1-5/8" to 1-7/8"; optional E4 configuration provides a 2-3/4" backset with 1-1/8" x 2-1/4" face for added flexibility.
  • Round Knob Design: 2-1/4" diameter (110 series) round knob provides a classic, ergonomic grip suited for commercial interior doors.
  • Latch Assembly: Includes Latch #1138 with a 1" x 2-1/4" front, 1/2" throw, and a stainless steel nose for smooth, durable latching action.
  • Steel-Reinforced Roses: Adjustable roses on both sides feature steel reinforcement and a 2-3/4" diameter for added strength and a clean, finished appearance.
  • T-Strike Included: Strike #1136, a 2-3/4" "T" Strike (1-1/8" x 2-3/4", 1-1/8" lip, square corner), is included for complete installation readiness.
  • Satin Stainless Steel Finish: Corrosion-resistant finish provides lasting durability and a professional aesthetic appropriate for commercial interiors.
  • 3-Hour Fire Rating: ANSI/BHMA A156.2 Grade 2 Plus 3-Hour Fire Rating ensures compliance with fire-rated door assembly requirements.

Certifications & Compliance

  • ANSI/BHMA A156.2 Grade 2
  • 3-Hour Fire Rating
  • BHMA Certified
  • UL Listed

Technical Specifications

  • Product Group: Mechanical Locks
  • Product Subgroup: Bored Locksets
  • Product Type: Cylindrical Locks
  • Subcategory: Cylindrical Locks
  • ANSI/BHMA: ANSI/BHMA, UL Listed
  • Commercial/Residential: Commercial
  • Function Description: Outside knob/lever locked by pushbutton on inside knob/lever. Rotating inside knob/lever or closing door releases/unlocks button. Emergency release in outside knob/lever.
  • Series: 110 Series
  • Keyed: No
  • ANSI Function: F75
  • Product Attribute: Cylindrical Locks
  • Product Function: Privacy/Bed/Bath
  • Strike Classification: T-Strike, 1-1/8" x 2-3/4", 1-1/8" Lip, Square Corner
  • Product Category: Mechanical Locks
  • Department: Door Hardware

Typical Applications

  • Commercial Office Restrooms and Private Offices
  • Healthcare Facility Patient Rooms and Restrooms
  • Educational Institution Restrooms and Faculty Offices
  • Hotel and Hospitality Guest Room Bathrooms
  • Multi-Tenant Residential Common Area Restrooms
  • Retail Establishment Fitting Rooms and Restrooms
  • Government and Municipal Building Restrooms

Why Marks USA 110L?

Marks USA 110L cylindrical locksets are built to commercial-grade standards, certified to ANSI/BHMA A156.2 Grade 2 with a 3-Hour Fire Rating and UL Listing for use in fire-rated door assemblies. Steel-reinforced roses, a stainless steel latch nose, and a durable Satin Stainless Steel finish reflect the robust construction expected in high-traffic commercial environments. For privacy applications where code compliance and long-term reliability are essential, the Marks USA 110L delivers proven performance.

Manufacturer Resources

Marks USA Product Catalog

Product Specs

Latch Throw:
1/2"
Grade:
Grade 2
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Cylindrical Locks
Subcategory:
Cylindrical Locks
ANSI/BHMA:
ANSI/BHMA, UL Listed
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Function Description:
Outside knob/lever locked by pushbutton on inside knob/lever. Rotating inside knob/lever or closing door releases/unlocks button. Emergency release in outside knob/lever.
Series:
110 Series
Front Size:
1-1/8” x 2-1/4”
Keyed:
No
ANSI Function:
F75
Product Attribute:
Cylindrical Locks
Product Function:
Privacy/Bed/Bath
Strike Classification:
T-Strike, 1-1/8" x 2-3/4", 1-1/8" Lip, Square Corner
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Marks USA 110L-32D-E4 – Frequently Asked Questions

1) Will the Marks USA 110L privacy knob fit a 1-3/4 inch commercial door?
Yes. The 110L privacy lockset covers door thicknesses from 1-5/8 to 1-7/8 inches, so a standard 1-3/4 inch commercial door sits right in the middle of the range. Thinner doors below 1-5/8 inches are outside what the 110L is set up for.
2) Will the Marks USA 110L latch into the strike that's already in my frame?
The latch has a 1/2 inch throw, which is normal for a cylindrical bored lock, and a 1-1/8 x 2-3/4 inch T-strike with a 1-1/8 inch lip and square corners is included. If your frame is prepped for an ASA strike (4-7/8 x 1-1/4 inches), the included T-strike won't drop into that cutout, so plan on either reusing the existing ASA strike or filling the frame prep.
3) How does the privacy function on the Marks USA 110L actually work from the inside?
Push the button on the inside knob and the outside knob locks. Turning the inside knob releases it, and so does closing the door, so nobody gets shut out by a button left pushed on an open door. The outside knob carries an emergency release for staff access to an occupied restroom or patient room. That's ANSI function F75, the standard bed/bath privacy function.
4) Is the Marks USA 110L knob lockset approved for a fire-rated door?
It carries a 3-Hour Fire Rating and is UL Listed, certified to ANSI/BHMA A156.2 Grade 2. That covers use in fire-rated door assemblies up to a 3-hour label, which is what a hospital or school restroom on a rated corridor typically needs.
5) What should be specified instead of the Marks USA 110L if the same door needs to be keyed?
The Marks USA 110L is not keyed; it is a privacy lockset with a pushbutton and an emergency release rather than a cylinder. For a keyed opening in the same cylindrical format, the Orca Hardware OCL250 is a Grade 2 medium duty entrance cylindrical lockset, and the Dorma C853 is a Grade 1 single cylinder entry lever lockset for doors 1-3/8 inch to 2-1/4 inch. A keyed entrance lock brings the opening into the facility keying system, which a privacy lock cannot join.
6) What is the closest equivalent to the Marks USA 110L privacy lockset if a Grade 1 cylindrical privacy lock is required?
The Marks USA 110L is a Grade 2 cylindrical privacy lockset with the Privacy/Bed/Bath function. Where a specification calls for Grade 1 in the same privacy function and the same cylindrical format, the Cal-Royal CAL20 Calypso Series is a Grade 1 extra heavy duty privacy lock covering door thicknesses from 1-3/8 inch to 2 inch. The 110L carries a 2-3/4 inch backset and a T-Strike measuring 1-1/8 inch by 2-3/4 inch with a 1-1/8 inch lip and square corner, so confirm the strike prep in the frame matches whichever lock you choose.
7) Which privacy lockset works on a door thicker than 1-7/8 inches?
The Marks USA 110L is a Grade 2 cylindrical Privacy/Bed/Bath lockset. For a thicker door in the same privacy function, the Cal-Royal CAL20 is a Grade 1 privacy lock rated for doors 1-3/8 inch to 2 inch. Measure the door at the bore before ordering, since the knob spindle and through-bolt length are what the thickness range governs.
8) If the door does not need to lock at all, what should be used instead of the Marks USA 110L?
The Marks USA 110L is a privacy lockset: the outside knob is locked by a pushbutton on the inside knob, and rotating the inside knob or closing the door releases the button, with an emergency release in the outside knob. On a door that only needs to latch, a passage lockset is the correct part instead. The Orca Hardware OCL210 is a Grade 2 medium duty passage cylindrical lockset, and the Cal-Royal CAL30 Calypso Series is a Grade 1 extra heavy duty passage lock for doors 1-3/8 inch to 2 inch. Neither carries a pushbutton, so a restroom or bedroom door still needs the privacy function.
9) Can an Alarm Lock Trilogy 4100 replace a Marks USA 110L privacy knob lock?
They share the Privacy/Bed/Bath function but they are different classes of hardware. The Marks USA 110L is a mechanical Grade 2 cylindrical privacy knob lockset, not keyed, operated by a pushbutton on the inside knob. The Alarm Lock Trilogy 4100 is a Grade 1 electronic cylindrical lock with a keypad and a privacy function, rated for doors 1-5/8 inch to 1-7/8 inch. Going to the 4100 means adding battery service and code management to a door that currently needs neither, so it is a substitute only when access control is actually wanted on that opening.
10) Does a lever lockset substitute for the Marks USA 110L round knob lock on the same door prep?
The Marks USA 110L is a cylindrical knob lockset with a 2-3/4 inch backset and a 1-1/8 inch by 2-1/4 inch front. Lever alternatives exist in the same cylindrical family, such as the Stanley QCL150 Grade 2 entry lever with a square 2-3/4 inch backset latch and a 4-7/8 inch by 1-1/4 inch ASA strike. Note the strike difference: the 110L uses a T-Strike at 1-1/8 inch by 2-3/4 inch with a 1-1/8 inch lip, while the QCL150 is prepped for a full ASA strike, which is a larger frame cutout. Where the frame already has a T-strike prep, staying with the T-strike lock avoids reworking the jamb.
11) Is a Grade 2 privacy knob enough for a high-traffic restroom, or should I step up to Grade 1?
Grade 2 is the standard commercial-duty tier and the 110L is built for commercial interiors, with steel-reinforced roses and a stainless steel latch nose. For an opening taking heavy public traffic where a spec calls out Grade 1, the Cal-Royal CAL20 Calypso is a Grade 1 extra heavy duty privacy lock covering 1-3/8 to 2 inch doors. Note the CAL20 is a lock, not a knob set, so the feel at the door changes.
12) Can I get the Marks USA 110L as a lever instead of a knob for ADA compliance?
The 110L is a round knob set, 2-1/4 inch diameter, with adjustable steel-reinforced roses at 2-3/4 inches. It is not a lever. Where an accessible opening requires lever trim, look at a lever privacy set instead, such as the Orca Hardware OCL240 Grade 2 privacy cylindrical lockset.
13) What finish does the Marks USA 110L privacy knob come in, and will it match the rest of my hardware?
One finish: US32D satin stainless steel. That's the brushed silver tone used on most commercial door hardware, so it lines up with satin stainless closers, push plates and hinges already in a typical office or institutional building. If your openings are standardized on brass or bronze, the 110L won't match.
14) Is everything included with the Marks USA 110L to install it, or do I need to order the latch and strike separately?
It ships complete for a standard bored prep: the lockset, latch with a 1/2 inch throw and a 1-1/8 x 2-1/4 inch front, and the matching 1-1/8 x 2-3/4 inch T-strike with square corners. Roses are adjustable on both sides. Nothing else to add unless your frame needs a different strike than the T-strike supplied.
15) I want privacy on a restroom but also an audit trail or code access. Is the 110L the wrong lock for that?
Yes, wrong tool. The 110L is purely mechanical, no keypad, no electronics, no keyway. For privacy function with electronic access, the Alarm Lock Trilogy 4100 is a Grade 1 electronic cylindrical lock with privacy function and a keypad covering 1-5/8 to 1-7/8 inch doors, and the Schlage CO-100 is a Grade 1 standalone electronic privacy lock for 1-3/4 inch doors.
16) Can I use the Marks USA 110L on a closet or corridor door that just needs to latch?
You can, but it's the wrong function. The 110L locks the outside knob from a pushbutton, which is not what you want on a door nobody should be able to secure. For a door that only needs to latch and turn freely from both sides, use a passage set such as the Orca Hardware OCL210 Grade 2 passage lockset or the Cal-Royal CAL30 Grade 1 passage lock.
17) What is the difference between the Marks USA 110L and the Orca OCL240 privacy lockset?
Both are Grade 2 cylindrical privacy locksets in the Privacy/Bed/Bath function. The Marks USA 110L is ANSI function F75, not keyed, and ships with a 1/2 inch throw latch and a T-Strike measuring 1-1/8 inch by 2-3/4 inch with a 1-1/8 inch lip and square corner; it is specified as a commercial lockset. The Orca Hardware OCL240 is a Grade 2 privacy cylindrical lockset rated medium duty. Match the strike prep already cut in the frame when deciding between them.
18) Is a Dorma C501 or CL701 an alternative to the Marks USA 110L for a restroom door?
No. The Marks USA 110L performs ANSI F75 privacy: the outside knob locks by pushbutton from the inside, with an emergency release outside. The Dorma C501 is a Grade 2 single dummy trim lever lockset in the dummy function, which is a pull only with no latch, and the Dorma CL701 is a Grade 2 single dummy non-keyed lever in the passage function. Neither secures a restroom door. Keep the privacy function for any bed, bath, or fitting room opening.
19) For a classroom or office door, is the Marks USA 110L the right lock?
The Marks USA 110L is a Privacy/Bed/Bath lockset in ANSI function F75, intended for doors where an occupant locks themselves in rather than doors that are secured against entry. For a classroom opening, the TownSteel XCE-9000 Series is a Grade 1 electronic classroom intruder cylindrical lockset with a keypad for doors 1-3/4 inch to 2 inch, and the Schlage XE360M is a Grade 1 wireless tubular lock in the classroom/storeroom function for 1-3/4 inch doors. For an office door, the Dorma C150 is a Grade 1 heavy-duty cylindrical lock in the entry/office function covering 1-3/8 inch to 2-1/4 inch.
20) What is a keyless option for a privacy or bath door that does not use a knob pushbutton?
The Marks USA 110L handles privacy with a pushbutton on the inside knob and an emergency release outside, and it is not keyed. If the opening wants keyless mechanical operation instead, the Lockey 1600 is a heavy duty mechanical keyless knob lock with an adjustable backset for doors 1-1/8 inch to 2 inch, and the Lockey 2830 is a mechanical pushbutton keyless knob lock with an auto-locking passage function for the same thickness range. The Lockey units use a code to operate rather than an occupant-set privacy button, so confirm which behavior the door actually needs.
21) Which privacy lock should be used when the restroom needs to be monitored or audited?
The Marks USA 110L is a mechanical Grade 2 privacy knob lockset with no electronics. Where a privacy opening needs to sit on an access control or audit program, the Schlage CO-100 is a Grade 1 heavy duty standalone electronic cylindrical lock in the privacy function with a keypad and cylinder options for 1-3/4 inch doors, and the Schlage NDEB is a Grade 1 heavy duty ENGAGE Series wireless cylindrical lock with 2.4 GHz Bluetooth Low Energy covering storeroom, office, privacy, and apartment functions for doors 1-5/8 inch to 2 inch. Both add power and credential management that the mechanical 110L does not require.
22) Do I need to specify handing when ordering the Marks USA 110L privacy lockset?
No handing to call out. The 110L is a cylindrical bored lock with a knob on each side and the same privacy function regardless of which way the door swings, so one part number covers left and right hand openings.
How fast can I get the Marks USA 110L-32D-E4 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 Marks USA 110L-32D-E4 come with a warranty?
Absolutely. The Marks USA 110L-32D-E4 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 Marks USA 110L-32D-E4?
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 Marks USA 110L-32D-E4 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.
!