Dorma CL770 Grade 2 Classroom ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$394.00
$379.42
Dormakaba Dorma CL770 Grade 2 Classroom Keyed, Single Cylinder Lever Lockset DOR-CL770

Dorma CL770 Grade 2 Classroom Keyed, Single Cylinder Lever Lockset

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Model: CL770 D LRE 626
$394.00
$379.42
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$394.00
$379.42
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DORMA CL700 / CK700 Series Locks

Grade 2 Cylindrical Lockset

The CL700 and CK700 Series grade 2 cylindrical locksets provide exceptional security, enhanced aesthetics, and rugged dependability. These key-in-lever locksets are built with a high performance cylindrical chassis for all applications where ANSI/BHMA A156.2 Series 4000 Grade 2 products are required. To meet the needs of your project, these versatile locks are available in a range of lever and knob trim designs.

Locks ANSI/BHMA Grade 2 certified.

  • With a high performance cylindrical chassis
  • Easy to install
  • Key-in-lever lock through-bolted
  • UL listed for UL 10C
  • Non-handed
  • Auxiliary deadlocking latch bolt

Product details

Different designs.
Choose between the LR, LC, and LG lever designs or the KR and KB knob designs.
Strength and resistance.
CL700 Series locks are through-bolted for additional strength and increased resistance to vibration.

 

Manufacturer Resources

Product Specs

Product Group:
Mechanical Locks
Series:
CK700 Series
Grade:
Grade 2
Standard Latch:
1/2" Throw Latch Bolt
Standard Strike:
ANSI T Strike 1-1/4" x 4-7/8", 1-3/16" lip length, square corner
ANSI/BHMA:
F84
Product Subgroup:
Bored Locksets
Product Type:
Cylindrical Locks
Subcategory:
Cylindrical Locks
Keyed Function:
Single Cylinder
Commercial/Residential:
Commercial
Keyed:
Yes
Handle Type:
Lever
Lock Function:
Classroom
Product Attribute:
Cylindrical Locks
Product Model:
CL770
Backset (Distance):
2-3/4",Cylinder Type,D - Conventional Cylinder
Product Function:
Classroom
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/8" to 1-3/4"
Product Category:
Mechanical Locks
Department:
Door Hardware

Dormakaba CL770 D LRE 626 – Frequently Asked Questions

1) Will the Dorma CL770 classroom lever fit a 1-3/8 inch door, or is it 1-3/4 only?
The CL770 covers 1-3/8 inch through 1-3/4 inch doors, so it works on both older 1-3/8 interior doors and standard 1-3/4 commercial doors without a thickness kit. Backset is 2-3/4 inches, which is the usual commercial bore. If your doors run thicker than 1-3/4, this is the wrong lock for them.
2) How does the CL770 classroom function actually work day to day?
Classroom function on the CL770 means the outside lever is locked and unlocked only by key; there is no thumbturn or button on the inside. The inside lever always retracts the latch for free egress, so the door stays code-compliant for exiting even when locked. The teacher has to step into the corridor with a key to lock it, which is why some districts move to an intruder-function lock instead.
3) Can I get the Dorma CL770 to work on my school's existing interchangeable core master key system?
Yes. Cylinder choice is an order option on the CL770: D gives a conventional cylinder in SC keyway with two keys, L gives a conventional cylinder less core so your locksmith supplies it, and J is SFIC prepped less core for a small format interchangeable core system. For an existing SFIC masterkey setup, order the J option and drop your own cores in.
4) Is the Dorma CL770 approved for use on a fire rated classroom door?
The CL700/CK700 series locks are UL listed to UL 10C, the positive pressure fire door test standard, so the CL770 is suitable for labeled fire door assemblies. It is also ANSI/BHMA Grade 2 certified to A156.2 Series 4000, with an F84 function designation.
5) What is the difference between the Dorma CL770 and the Marks USA 175RF?
Both are Grade 2 cylindrical lever locksets. The Dorma CL770 is a classroom function lock with a 2-3/4 inch backset, offered with conventional cylinder, conventional less core, or SFIC less core. The Marks USA 175RF is a storeroom function clutched lever lockset with small format interchangeable core less core and a 2-3/4 inch backset with an ANSI strike. Classroom keeps the outside lever locked or unlocked by key; storeroom keeps the outside lever always locked with key entry only.
6) What is a Grade 1 alternative to the Dorma CL770 classroom lever lock?
The Dorma CL770 is an ANSI/BHMA Grade 2 cylindrical classroom lever lock with a 2-3/4 inch backset and conventional or small format interchangeable core cylinder options. If a project specifies Grade 1 in a classroom function, the TownSteel FCE-2000 Series is a Grade 1 heavy duty classroom cylindrical lockset, and the TownSteel XCE-2000 Series is a Grade 1 heavy duty classroom cylindrical lockset with a keypad. Both differ from the CL770 in that they are electronic rather than purely mechanical key-operated locks.
7) Which lock should I use instead of the Dorma CL770 if I need classroom security lockdown from inside the room?
The Dorma CL770 is a keyed classroom function lever lock, which is keyed from the outside only as a single cylinder lock. For an opening where staff need to secure the door without stepping into the corridor, the TownSteel FCE-4000 Series is an RFID electronic intruder classroom cylindrical lockset and the TownSteel XCE-9000 Series is an electronic classroom intruder cylindrical lockset with keypad, both Grade 1 heavy duty for 1-3/4 inch doors.
8) Can I use a Stanley QCL150 in place of the Dorma CL770?
They are not the same function. The Dorma CL770 is a Grade 2 classroom lever lockset, non-handed, with a 2-3/4 inch backset and an ANSI T strike 1-1/4 by 4-7/8 inches. The Stanley Security QCL150 is a Grade 2 entrance function lever, Sierra bent lever with rose, less cylinder, with a square 2-3/4 inch backset latch and a 4-7/8 by 1-1/4 inch ASA strike. The door prep matches, but entrance function is locked and unlocked by a button or turn rather than classroom key control from the outside.
9) Do I have to order the Dorma CL770 handed for a left or right door?
No handing to specify. The CL770 chassis is non-handed, so one lock covers left hand, right hand, and reverse bevel openings. That makes it easier to stock a couple of spares for a building rather than one of each hand.
10) Is Grade 2 enough for a school corridor, or should I be buying Grade 1?
The CL770 is a Grade 2 commercial cylindrical lock, through-bolted for extra resistance to vibration and loosening, with an auxiliary deadlocking latch. That suits classroom and office doors at normal traffic. For a high abuse opening or where a spec calls Grade 1, a Grade 1 cylindrical alternative we carry is the Marks USA 195RAB Survivor Series clutched lever, or the Cal-Royal CAL20 Calypso if the opening needs a privacy function instead.
11) What is the difference between the CL770 classroom lock and an electronic classroom intruder lock?
The CL770 is mechanical and keyed from the outside only, so locking down requires a key in the corridor. If you want lockdown from inside the room or credential access, the TownSteel XCE-9000 is a Grade 1 electronic classroom intruder cylindrical lockset with a keypad for 1-3/4 to 2 inch doors, and the Schlage XE360M is a Grade 1 wireless classroom/storeroom lock for 1-3/4 inch doors. Both cost you batteries and programming; the CL770 needs neither.
12) Does the CL770 come with keys, or do I need to have it keyed?
Depends on the cylinder option. The D option arrives as a conventional cylinder in the Schlage C (SC) keyway with two keys, ready to hang. The L and J options ship less core, meaning no cylinder core and no keys, for a locksmith to key into an existing system.
13) I do not need a key on the Dorma CL770 doors - what is the non-keyed equivalent?
The Dorma CL770 is a keyed classroom lever lockset. Where the opening needs no key, the Orca Hardware OCL210 is a Grade 2 medium duty passage cylindrical lockset, the Orca OCL240 is a Grade 2 medium duty privacy cylindrical lockset, and the Orca OCL2170 is a Grade 2 half dummy lever for a door leaf that does not latch. The Cal-Royal CAL30 is a Grade 1 passage lockset and the CAL20 a Grade 1 privacy lockset, both for 1-3/8 to 2 inch doors.
14) Is there a keyless alternative to the Dorma CL770 for a door I do not want to issue keys for?
The Dorma CL770 uses a key in the lever with a conventional or SFIC cylinder. For code-based entry on a cylindrical prep, the Alarm Lock Trilogy T2 DL2700 is a Grade 1 standalone electronic entrance lock with a digital keypad, 100 user codes, and IC/SFIC compatibility for 1-5/8 to 1-7/8 inch doors, and the Alarm Lock T3 DL3075 is a Grade 1 electronic cylindrical lock with audit trail and keypad. The BEST 9KZ EZ Series is an electronic keypad cylindrical lock with key override if you want both a code and a key.
15) The Dorma CL770 does not fit my door thickness - what else is available?
The Dorma CL770 covers doors from 1-3/8 to 1-3/4 inches. For thicker leaves, the Cal-Royal CAL20 privacy and CAL30 passage locksets cover 1-3/8 to 2 inches, the Schlage NDEB ENGAGE Series Grade 1 cylindrical lock covers 1-5/8 to 2 inches, the SDC E75 Series covers 1-3/4 to 2-1/8 inches, and the Lockey 1600 and 2830 mechanical keyless knob locks cover 1-1/8 to 2 inches.
16) What looks like a substitute for the Dorma CL770 but is not?
The Stanley Security QTL230E is listed with a deadbolt function in the QTL200 Series, so it does not replace the Dorma CL770 latching classroom lever lock. The Orca OCL2170 is a Grade 2 half dummy lever with no latch at all. The Schlage CO-100 is a Grade 1 standalone electronic cylindrical lock in privacy function, and the CENTRIOS CEB100 is a Grade 1 smart Bluetooth cylindrical lock in privacy function - both are privacy rather than the CL770's keyed classroom function.
17) Is there a knob version comparable to the Dorma CL770?
The Dorma CL770 is a lever lockset in the CK700 Series. For a keyed knob in the same Grade 2 class, the Marks USA 110AB is a Grade 2 entrance function round knob lockset with a 2-3/8 inch backset in satin stainless steel - note that is a 2-3/8 inch backset against the CL770's 2-3/4 inch, so confirm the bore location on the door.
18) What replaces the Dorma CL770 on a classroom door that needs to go on an access control system?
The Dorma CL770 is a mechanical keyed classroom lever lock. To bring the same opening onto credentials, the Schlage NDEB ENGAGE Series is a Grade 1 wireless cylindrical lock using 2.4 GHz Bluetooth Low Energy with storeroom, office, privacy, and apartment functions, the Schlage XE360M is a Grade 1 wireless tubular lock in classroom/storeroom function with a smart mobile reader, and the SDC Electra 7200 Series is a solenoid controlled cylindrical lock at dual voltage 12/24VDC for hardwired control.
19) Which lever and finish combinations can I order on the CL770?
Three lever designs, LR, LC, and LG, each in 613 Oil Rubbed Bronze or 626 Satin Chrome. All three lever styles are available in both finishes, and each pairs with any of the three cylinder options. The 626 satin chrome is the one that matches most existing institutional hardware.
20) Is there a Dorma cylindrical lock closer to the CL770 if I want to stay with the same manufacturer family?
Within the same platform, the Stanley Security QCL200 cylindrical lock is keyed different in the SC keyway and comes with a 118F ANSI strike, and the QCL100 series QCL150 is a Grade 2 entry lever with a square 2-3/4 inch backset latch and a 4-7/8 x 1-1/4 inch ASA strike. Both share the CL770's 2-3/4 backset and ANSI strike prep, so they interchange on the same door prep; the difference is function, entry rather than classroom.
21) I want a lever instead of a knob but the Dorma CL770 is keyed - what passage lever matches it on trim?
The Dorma CL770 is a lever handle lockset in Grade 2. For a matching lever style without keying, the Marks USA 195N is a Grade 1 Survivor Series passage lever lockset with an American lever and is ADA compliant, and the Orca OCL210 is a Grade 2 medium duty passage cylindrical lockset. If the door needs to be keyed but in entrance rather than classroom function, the Marks USA 195RAB is a Grade 1 entry clutched lever lockset supplied less core.
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Does the Dormakaba CL770 D LRE 626 come with a warranty?
Absolutely. The Dormakaba CL770 D LRE 626 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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