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The Schlage ND91 is the Vandlgard entrance and office lock function (ANSI F82) of the ND Series, Schlage heavy duty Grade 1 cylindrical lock. It is the standard entrance and office function with Vandlgard locked lever protection built in.
When the lock is locked, Vandlgard lets the outside lever rotate freely up and down instead of resisting. That removes the leverage a vandal needs: excessive force cannot be transmitted into the chassis, which protects the internal components from the kind of damage that puts a lock out of service. On a door that gets hung on, kicked, or wrenched, it is the difference between a lock that survives and one that gets replaced.
The locking behavior is the familiar office arrangement. A key cylinder in the outside lever and a push button in the inside lever: push the button and the outside lever is inoperative, and the key outside does not lock, it only unlocks. Turning the key outside or rotating the inside lever retracts the latch and releases the button, leaving the door unlocked afterward. The inside lever is always free for immediate egress.
It takes conventional, FSIC, or SFIC cylinder formats on the patented Everest 29 S123 keyway, with 3,100 in-lb of abusive lever torque resistance (2.6x BHMA) and near zero droop and wobble after 16 million cycles (16x BHMA) behind it.
Features
- Vandlgard locked lever protection - the outside lever rotates freely up and down when locked.
- Limits the ability of vandals to apply excessive force to the chassis, helping prevent damage to internal components.
- Entrance and office function - key cylinder outside, push button inside, deadlatch.
- Outside lever made inoperative by pushing the button on the inside lever.
- Key outside does not lock - it unlocks and releases the button.
- Rotating the inside lever also retracts the latch and releases the button.
- Inside lever always free for immediate egress.
- In the unlocked state the latch is retracted by either lever.
- Conventional, FSIC, and SFIC cylinder formats, plus less-cylinder options for existing key systems.
- Patented Everest 29 S123 keyway standard on conventional and FSIC cylinders.
- Keyed different, keyed alike, master keyed, or construction keyed.
- ANSI/BHMA Grade 1 certified to A156.2-2011, Series 4000.
- Resists 3,100 in-lb of abusive lever torque, 2.6 times the BHMA requirement.
- Near zero droop and wobble after 16 million cycles, 16 times BHMA, with no set screws or O-rings.
- Nine ADA compliant lever designs and nine finishes; UL Listed 3 hour fire rated and BAA compliant.
Specifications
Function
- Schlage Function
- ND91 Vandlgard entrance and office lock
- ANSI Function
- F82
- Trim
- Lever with key cylinder outside; push button in the lever inside; deadlatch
- Unlocked State
- Latch retracted by either lever
- Locking
- Outside lever is made inoperative by pushing the button on the inside lever. The key outside does not lock
- Unlocking
- Key outside, or rotating the inside lever, retracts the latch and releases the button, unlocking the outside lever
- Egress
- Inside lever always free for immediate egress
- Cylinders Required
- One, outside
Vandlgard Protection
- Behavior
- Allows the outside lever to rotate freely up and down when locked
- Purpose
- Limits the ability of vandals to apply excessive force to the chassis, helping to prevent damage to internal components
- Scope
- Applies when the lock is in the locked state. Normal operation is unaffected when unlocked
Cylinders and Keying
- P6
- Conventional 6-pin cylinder, Everest 29 S123 keyway
- P
- Conventional 6-pin cylinder keyed 5-pin, Classic C keyway
- L
- Less conventional cylinder, for supplying your own
- R
- FSIC 6-pin full size interchangeable core
- J
- Less FSIC core, for an existing full size interchangeable core system
- H
- Refundable construction SFIC core
- B
- Less SFIC core, for an existing small format interchangeable core system
- Keying
- Keyed different (standard), keyed alike, master keyed, or construction keyed
- Default Keyway
- Everest 29 S123 on conventional and FSIC cylinders. Master keyed systems default to Everest 29 S145
- Pack Cylinders Loose
- PCL available if cylinders should ship uninstalled
Performance
- Abusive Lever Torque
- 3,100 in-lb, equivalent to over 690 lbs at the end of a 4-1/2 inch lever (2.6x BHMA)
- Offset Lever Pull
- 1,600 lbs (8x BHMA)
- Vertical Impact
- 100 impacts with no failure or indication of stress (20x BHMA)
- Cycle Life
- Near zero droop and wobble after 16 million cycles (16x BHMA)
- Latch Preload
- Latch retraction with 200 lb preload (4x BHMA)
Chassis and Trim
- Chassis Material
- Modular design of zinc and steel components, plated for corrosion protection
- Handing
- Non-handed
- Door Thickness
- Standard 1-5/8 to 2-1/8 inches. Optional 1-3/8 inches to 6 inches in EE, EO, EI, and ED configurations
- Backset
- Standard 2-3/4 inches, with 3-3/4 inch latches available and a 5 inch backset extension
- Lever Designs
- Athens (ATH), Boardwalk (BRK), Broadway (BRW), Latitude (LAT), Longitude (LON), Omega (OME), Rhodes (RHO), Sparta (SPA), Tubular (TLR), in pressure cast zinc plated to match the finish. The inside lever can be specified the same as outside or as a different design
- Roses
- Wrought brass or zinc, plated to match the finish. Rose diameter 3-7/16 inches
- Finishes
- 605 bright brass (US3), 606 satin brass (US4), 612 satin bronze (US10), 613 oil rubbed bronze (US10B), 619 satin nickel (US15), 622 matte black (US19), 625 bright chrome (US26), 626 satin chrome (US26D), 643e aged bronze
Latch Options
- 13-247
- Deadlatch, 2-3/4 inch backset, 1-1/8 x 2-1/4 inch square corner faceplate (standard)
- 13-248
- Spring latch, 2-3/4 inch backset
- 14-028
- Deadlatch, 3-3/4 inch backset, 1-1/8 x 2-1/4 inch square corner
- 14-010
- Spring latch, 3-3/4 inch backset, 1-1/8 x 2-1/4 inch square corner, non-restoring
- 14-042
- Anti-friction fire deadlatch, 3/4 inch throw, 2-3/4 inch backset, for pairs of doors
- 43-005
- 5 inch backset extension
Strike Options
- 10-025
- ANSI strike, 1-1/4 x 4-7/8 inches, 1-3/16 inch lip (standard). Also available with the K510-066 dust box, or with a 1-3/8 or 1-1/2 inch lip
- XQ07-351
- 10-025 strike with a 7/8 inch flat lip, or special lip lengths through 6 inches
- 10-013
- T-strike with dust box, 1-1/8 x 2-3/4 inches, with a 1-1/8 or 1-1/2 inch lip
- 10-016
- T-strike with deep dust box for the 3/4 inch fire latch, 1-1/8 x 2-3/4 inches
Certifications
- ANSI/BHMA
- A156.2-2011, Series 4000 Grade 1 cylindrical locks
- Accessibility
- Complies with ICC A117.1 Accessible and Usable Buildings and Facilities
- Fire
- UL 10C and CAN/ULC-S104. Three hour A label single fire door 4 ft by 10 ft. Pairs of doors three hour at 8 ft by 8 ft with the 3/4 inch latch option; pairs 90 minute at 8 ft by 10 ft with the 3/4 inch latch option
- California Fire Code
- Levers with a return to door of 1/2 inch or less comply: Rhodes, Sparta, Tubular, Omega, Longitude, and Boardwalk
- Florida Building Code
- Complies with Florida Building Code (ASTM E330, E1886, E1996) and Miami Dade (TAS 201, 202, 203) hurricane requirements
- Federal
- Meets FF-H-106C Series 161. BAA compliant on all functions
- Warranty
- 10 year mechanical and 3 year electro-mechanical
Frequently Asked Questions
- What is Vandlgard?
- Schlage locked lever protection. When the lock is locked, the outside lever rotates freely up and down rather than resisting. Because the lever gives, a vandal cannot apply excessive force to the chassis, which helps prevent damage to the internal components.
- Is the lock less secure because the lever moves?
- No. The lever turning freely does not retract the latch. The door stays locked exactly as it would on the standard function - the lever is simply disconnected while locked, instead of fighting the force applied to it.
- How is this different from the ND50?
- Only Vandlgard. The ND91 and the ND50 are both ANSI F82 entrance and office locks with identical locking behavior. The ND91 adds the locked lever protection.
- Where is it worth specifying?
- Doors that take abuse: school corridors, dormitories, public buildings, recreation facilities, and any opening where people hang on levers or force them. The cost difference is small next to replacing a damaged chassis.
- Can I lock the door with the key from outside?
- No. On this function the key outside does not lock. Locking is done with the push button on the inside lever, and the key only unlocks.
- Does the door stay locked after someone keys in?
- No. Turning the key outside releases the button as it retracts the latch, so the door is left unlocked. The same happens when someone rotates the inside lever.
- Can people always get out?
- Yes. The inside lever is always free for immediate egress, whether the button is pushed or not.
- Which cylinder option do I pick?
- Match your existing key system. P6 is conventional on the patented Everest 29 S123 keyway, the Schlage default. P is conventional on the open Classic C keyway. Pick R for a 6-pin FSIC core, H for a refundable construction SFIC core, or L, J, or B to receive the lock less cylinder or less core.
- Which latch do I need?
- The standard 13-247 deadlatch on a 2-3/4 inch backset covers most doors. Use a 3-3/4 inch latch for deeper stiles, and the 14-042 anti-friction fire deadlatch with its 3/4 inch throw on pairs of doors.
- Does the lever choice matter for code?
- It can. For the California Fire Code, levers with a return to door of 1/2 inch or less comply, which covers Rhodes, Sparta, Tubular, Omega, Longitude, and Boardwalk. Confirm the lever design against your local requirements.
