Corbin Russwin ML2000 Series
Corbin Russwin ML2055 NSA LC Classroom Mortise Lock, NS Lever, A Rose, Less Cylinder
Finish: Bright Brass (605)
Faded finishes are special order.
Configuration: Standard
- Door to door shipping
- Technical support on every order: 346-777-3031
Overview
About this product
Corbin Russwin's ML2055 NSA combines the ML2000 Series mortise lockbody with the Newport (NS) lever and A wrought rose in the classroom function, ANSI F05. Typical uses include classrooms and teaching spaces in schools, colleges and training centers.
Specs include ANSI/BHMA Grade 1, a 3 hour fire rating (UL10c), a 2-3/4 inch backset for 1-3/4 inch doors, and a 3/4 inch latch throw. It is listed as ADA compliant and BAA qualified.
This LC version is supplied less cylinder, so you can add a mortise cylinder keyed to your building's existing system.
What the function does
Either lever opens the door until the outside lever is locked by key from outside. Locked, the outside lever remains locked until unlocked by key, and a key retracts the latchbolt. The inside lever is always free, and the auxiliary latch deadlocks the latchbolt.
Highlights
- Outside lever locked and unlocked by key from outside
- Outside lever stays locked until unlocked by key
- Inside lever always free
- A wrought rose trim with the Newport lever
- UL10c listed, 3 hour fire rating, ANSI/BHMA Grade 1
- For 1-3/4 inch thick doors, 2-3/4 inch backset
- Supplied less cylinder for your own keying
Photo shows the Bright Brass (605) and Satin Brass (606) and Satin Bronze (612) and Dark Bronze (613) and Dark Bronze (613E) and Satin Nickel (619) and Bright Chrome (625) and Satin Chrome (626) and Satin Stainless Steel (630) and Black Suede (BSP) finish. Other finishes are the same product in the finish you select.
How it works
Classroom function, ANSI F05
A key in the outside lever locks or unlocks it. The inside lever is always free, so nobody gets locked in. Common on classrooms and meeting rooms.
Specifications
- Model
- ML2055 NSA
- Function
- ML2055 Classroom, ANSI F05
- Grade
- ANSI/BHMA Grade 1
- Series
- ML2000
- Lever
- Newport
- Trim
- A-Wrought Rose
- Door thickness
- 1-3/4 Inch
- Backset
- 2-3/4 Inch
- Latch throw
- 3/4 Inch
- Latch face
- 8" x 1-1/4" x 3/32"
- Strike
- ANSI-Straight Lip
- Fire rating
- 3 Hours
- UL listing
- UL10c
- ADA compliant
- Yes
- Standards
- ANSI/BHMA A156.13 Series 1000, Operational and Security Grade 1, A117.1 Accessibility Code; UL Listed
- Projection
- 2-5/8 Inch
- Warranty
- 10 Years
- Buy American Act
- Yes
- Finish
- Bright Brass (605)
- SKU
- ML2055 NSA 605 LC
Send a photo of the door edge and the hardware on it. We'll match the part.
Send a photoCommon questions
How is the classroom function locked?
With a key in the outside cylinder. There is no inside locking control on this function.
Can students lock themselves in or out?
The lock state is set with a key from outside, and the inside lever is always free, so the door can always be opened from inside.
Will it fit my door?
It is made for 1-3/4 inch thick doors with a 2-3/4 inch backset, using a mortise pocket for the ML2000 Series lockbody.
What fire rating does it carry?
The specifications list a 3 hour fire rating with UL10c listing. Confirm the rating needed on the door's label.
Which finishes are available?
Finish options include 605, 606, 611, 612, 613, 626, 630 and others; choose the one that matches your other hardware.
Does it come with a cylinder?
No. LC means less cylinder, so a compatible mortise cylinder must be added to operate the key functions.
Before you order
Buying for a whole job?
Send the hardware schedule or drawing. Door, frame and hardware quoted together so nothing shows up missing.