Marks USA MAR175RS 175RS IC Cl...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$160.34
$80.82
Marks USA 175RS IC Classroom Lever Lockset - Grade 2 Survivor Series, American Lever, IC Less Core, Classroom

Marks USA MAR175RS 175RS IC Classroom Lever Lockset — Grade 2 Survivor Series, American Lever, IC Less Core, Classroom Function

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Model: 175RS26D-3/4
$160.34
$80.82
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$160.34
$80.82
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Marks USA 175RS IC Classroom Lever Lockset — Grade 2 Survivor Series, American Lever, IC Less Core

The Marks USA 175RS IC Classroom Lever Lockset is a commercial-grade cylindrical lockset from the Survivor Series, engineered for demanding environments where durability and low maintenance are essential. Built with a unique stainless steel clutch mechanism and bronze roller bearings on a cast retractor chassis, this lockset exceeds BHMA Grade 1 specifications by 300%, achieving over 3.6 million cycles. It accommodates door thicknesses of 1-5/8" to 1-7/8" (with optional K1904 spacer for 1-3/8" doors), supports 2-3/8" and 2-3/4" backsets, and carries a 3-hour fire rating — making it an ideal solution for classroom and institutional applications.

Key Features

  • Exceptional Cycle Durability: Exceeds BHMA Grade 1 specifications by 300% with over 3.6 million cycles, ensuring long-term reliability in high-traffic commercial environments.
  • Unique Clutch Mechanism: Stainless steel clutch disengages levers from the retractor when locked, allowing levers to swing freely without resistance — dramatically reducing wear, abuse, and lever droop.
  • Cast Retractor on Bronze Roller Bearings: Solid cast Zamac levers with 1/2" return and bronze roller bearings provide a strong, durable chassis for millions of cycles of dependable operation.
  • Backset & Door Compatibility: Supports 2-3/8" and 2-3/4" backsets; fits door thicknesses of 1-5/8" to 1-7/8"; use K1904 spacer for 1-3/8" doors.
  • Latch Specifications: Latch #1134 with 1-1/8" x 2-1/4" front, 1/2" throw, and stainless steel nose for smooth, reliable latching performance.
  • Thru-Bolted Rose Assembly: 3-1/4" diameter roses are thru-bolted with spring-loaded 2-#10 thru-bolts for secure, stable mounting.
  • 3-Hour Fire Rated: Certified for 3-hour fire-rated door assemblies, supporting life-safety compliance in commercial and institutional buildings.
  • Marks Lifetime Mechanical Warranty: Backed by Marks USA's lifetime mechanical warranty for added confidence and long-term value.
  • ADA Compliant: Lever design meets ADA accessibility requirements for commercial door hardware applications.

Certifications & Compliance

  • ANSI/BHMA Certified — Exceeds Grade 1 Specifications by 300%
  • UL Listed
  • 3-Hour Fire Rated
  • ADA Compliant
  • Marks USA Lifetime Mechanical Warranty

Technical Specifications

  • Series: 175 Series
  • Product Group: Mechanical Locks
  • Product Subgroup: Bored Locksets
  • ANSI/BHMA: ANSI/BHMA, UL Listed
  • Commercial/Residential: Commercial
  • Function Description: Latch retracted by knobs/levers at all times
  • ADA Compliant: Yes
  • Keyed: No
  • ANSI Function: F75
  • Product Function: Passage/Hall/Closet
  • Door Thickness Range: 1-3/4"
  • Strike Classification: ANSI, 1-1/4" x 4-7/8", 1-1/4" Lip, Square Corner
  • Product Category: Mechanical Locks
  • Department: Door Hardware

Typical Applications

  • K–12 School Classrooms and Educational Facilities
  • College and University Campus Buildings
  • Healthcare and Medical Office Facilities
  • Commercial Office Buildings
  • Government and Municipal Buildings
  • Institutional and Multi-Use Public Facilities
  • Retail and Commercial Tenant Spaces

Why Marks USA 175RS?

Marks USA 175RS Survivor Series locksets are built to outperform standard commercial hardware, with a proprietary stainless steel clutch and bronze roller bearing chassis that exceeds BHMA Grade 1 durability standards by 300% — surpassing 3.6 million cycles. Engineered for demanding institutional and commercial environments, the 175RS delivers a lower-maintenance, longer-lasting solution with 3-hour fire rating, ADA compliance, and UL listing for complete peace of mind.

Manufacturer Resources

Marks USA Product Catalog

Product Specs

Series:
175 Series
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:
Latch retracted by knobs/levers at all times
Front Size:
1-1/8” x 2-1/4”
ADA Compliant:
Yes
Keyed:
No
ANSI Function:
F75
Product Attribute:
Cylindrical Locks
Product Function:
Passage/Hall/Closet
Door Thickness Range:
1-3/4"
Strike Classification:
ANSI, 1-1/4" x 4-7/8", 1-1/4" Lip, Square Corner
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Marks USA 175RS26D-3/4 – Frequently Asked Questions

1) What backset do I order the Marks USA 175RS lever lockset in?
Two backsets are built: 2-3/8 inch and 2-3/4 inch, and you pick it as an option when ordering. Measure from the door edge to the center of the existing bore. 2-3/4 is the usual commercial backset and 2-3/8 turns up on lighter and residential-prepped doors, so match what is already drilled rather than guessing.
2) Will the 175RS passage lever fit a 1-3/4 inch door?
Yes. 1-3/4 inches is the door thickness the 175RS cylindrical lockset is specified for, which is the standard commercial hollow metal and solid core thickness.
3) Will the 175RS latch work with the strike already in my frame?
The 175RS ships to an ANSI strike, 1-1/4 x 4-7/8 inches with a 1-1/4 inch lip and square corners, and the latch front measures 1-1/8 x 2-1/4 inches with a 1/2 inch throw. If your frame is already prepped for a full ANSI 4-7/8 strike, it drops straight in. Frames cut for a small T-strike or a round-corner strike will need the prep changed or the existing strike reused only if the lip projection still catches a 1/2 inch throw.
4) I need a lock on a classroom door that can be secured, not just a passage lever. What should I use instead of the Marks 175RS?
The Marks USA 175RS is a non-keyed passage function lock - the latch is retracted by the levers at all times, so it provides no locking. For a classroom opening that has to be secured, look at the TownSteel FCE-2000, a Grade 1 standalone motorized cylindrical lockset in classroom function for 1-3/4 inch doors, the TownSteel XCE-9000 classroom intruder cylindrical lockset with keypad for 1-3/4 inch to 2 inch doors, or the Schlage XE360M, a Grade 1 wireless tubular lock in classroom/storeroom function for 1-3/4 inch doors. For a keyed mechanical option, the Dorma C853 is a Grade 1 single cylinder entrance lever for 1-3/8 inch to 2-1/4 inch doors.
5) Which alternative to the Marks 175RS uses the same ANSI 4-7/8 inch strike prep?
The Marks USA 175RS uses an ANSI strike, 1-1/4 inch x 4-7/8 inch with a 1-1/4 inch lip and square corner. The Stanley Security QCL150 Grade 2 entry lever ships with an ASA 4-7/8 inch x 1-1/4 inch strike and a 2-3/4 inch backset latch, so it drops into the same frame prep, though it is an entrance (keyed) function rather than passage. By contrast, the Stanley QCL200 is listed with a 118F ANSI 1-1/8 inch x 2-3/4 inch strike, a different frame cutout.
6) Is the Marks 175RS lever ADA compliant for a school or office corridor?
Yes, the 175RS lever trim is ADA compliant, and it is a commercial-duty cylindrical lockset, so it suits corridor, classroom and office doors where a lever is required instead of a knob.
7) Is the Marks USA 175RS certified hardware, and what does it carry?
It is an ANSI/BHMA certified cylindrical lockset and UL Listed. That combination is what most institutional and government specs ask for on a corridor opening.
8) The keying option is required at checkout but this is a passage lock. What do I choose?
Pick "None (For Less Core)". The 175RS passage function is non-keyed, so there is no cylinder to key. The keyed-different and keyed-alike choices on the same option list exist for the keyed members of the 175 family, not for the passage set.
9) What finishes does the Marks 175RS lever come in, and can I match the rest of my building?
Three finishes are built: US26D satin chrome, US3 bright brass, and US10B oil-rubbed dark bronze. US26D is the common institutional finish, so if your other openings are satin chrome commercial hardware that is the one that matches. Each finish is available in both the 2-3/8 and 2-3/4 backset.
How fast can I get the Marks USA 175RS26D-3/4 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 175RS26D-3/4 come with a warranty?
Absolutely. The Marks USA 175RS26D-3/4 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 175RS26D-3/4?
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 175RS26D-3/4 from ZenSupply?
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