Key takeaways
- The ND Series default strike is an ANSI strike with no box, 1-1/4 x 4-7/8 inches with a 1-3/16 inch lip, listed for the ND and wired ND only. The NDE takes a strike of the same size with door position switch magnets.
- The L9000's standard strike is the same size with a 1-3/16 inch lip and a dust box, and Schlage lists optional lips of 7/8, 1, 1-1/2, 1-3/4 and 2 inches.
- Schlage's ALX Series catalog says locks are furnished with a 1-1/4 x 4-7/8 inch ANSI strike unless otherwise specified. The default has a 1-3/16 inch lip and no dust box.
- Schlage's T-strikes are 1-1/8 x 2-3/4 inches and come with a strike box. The deep-box version is for the 3/4 inch throw fire door latch.
- On the ND and ALX, the box for the ANSI strike is a separate part that is ordered or specified when required. The L Series service manual says that box ships with three L Series strikes, including the L9000 standard strike.
- Schlage's wood and metal jamb templates for the ND and L9000 default strikes and the B Series ANSI strike both show a 4-7/8 inch cutout and two #12-24 screws.
Lock fit
Which Schlage strike does each lock take?
Schlage's catalogs name a default or standard strike for each lock series. The plate's height tells the shapes apart: the ANSI strikes are 4-7/8 inches tall, the T-strikes 2-3/4 inches, and the L400 default 3-1/2 inches.
A cylindrical lock such as the ND or ALX fits through a round hole bored in the door; a mortise lock such as the L9000 sits in a pocket cut into the door edge. For the AL Series, Schlage's jamb templates name the ND's default strike, the 10-025, as standard, as they do for D Series knobs and ND Series levers.
Schlage's ND and ALX service manuals label both ANSI defaults ANSI Prep. A115.2 and give the plate size as 1-1/4 x 4-7/8 x 3/32 inches.
For B Series deadbolts, the catalog lists the 10-094, square corner, 1-1/8 x 2-3/4 inches, as the default strike, and the 10-087 as an ANSI 1-1/4 x 4-7/8 inch strike with box and a 1-3/16 inch lip.
The rest of the deadbolt strikes, the dust box and the frame reinforcer are on the Schlage commercial deadbolts page. For strike types, strike heights and how a strike sits in the frame on any brand of lock, see the general guide to commercial strike plates.
| Lock series | Default strike | Size | Lip | Box |
|---|---|---|---|---|
| ND Series and wired ND (cylindrical) | 10-025 | 1-1/4 x 4-7/8 in. | 1-3/16 in. | No box; K510-066 ordered separately if required |
| NDE Series | 10-130 | 1-1/4 x 4-7/8 in. | 1-3/16 in. | No box; has DPS (door position switch) magnets |
| ALX Series (cylindrical) | 47267101 | 1-1/4 x 4-7/8 in. | 1-3/16 in. | No dust box; K510-066 must be specified |
| L9000 Series (mortise) | 10-072 | 1-1/4 x 4-7/8 in. | 1-3/16 in. | With dust box |
| L9460 Series deadlocks | 10-073 | 4-7/8 x 1-1/4 in. | No lip | K510-066 |
| L400 Series | 10-079 | 1-1/8 x 3-1/2 in. | No lip | With box; K510-053 |
Source Schlage's ND, ALX and L Series catalogs and service manuals, the L Series cut sheet, Schlage's ANSI strike jamb templates, and the B Series Commercial Grade Deadbolts catalog.
ND Series
ND and NDE Series strikes
Schlage's ND Series catalog says the ND Series is available with both T-strike and ANSI strikes in a variety of lip lengths to accommodate different door preps. The ANSI strikes are listed with no box and the T-strikes with one; the NDE versions add door position switch magnets.
The ND Series data sheet gives the order defaults as a 1-3/4 inch door thickness and a 1-3/16 inch lip. Another lip is ordered by its length, using the order codes in the parts table below.
The service manual's special parts include a T-strike and an ANSI strike with a 7/8 inch flat lip, and a T-strike with a lip from 1-5/8 to 6 inches or from 6-1/8 to 12 inches. Their part numbers are in the parts table.
| Part | Type and size | Lip lengths | Box | Listed for |
|---|---|---|---|---|
| 10-025 | ANSI, 1-1/4 x 4-7/8 in. | 1-3/16 (default), 1-3/8, 1-1/2 in. | No box; K510-066 ANSI plastic strike box ordered separately if required | ND and wired ND only |
| 10-130 | ANSI with DPS magnets, 1-1/4 x 4-7/8 in. | 1-3/16 (default), 1-3/8, 1-1/2 in. | No box | NDE only |
| 10-013 | T-strike, square corner, 1-1/8 x 2-3/4 in. | 1-1/8, 1-1/2 in. | With strike box (C603-623) | ND and wired ND only |
| 10-016 | T-strike, square corner, 1-1/8 x 2-3/4 in. | 1-1/8 in. | With deep strike box (B502-853), for fire door latch | ND and wired ND only |
| 10-132 | T-strike, square corner, with DPS magnet, 1-1/8 x 2-3/4 in. | 1-1/8, 1-1/2 in. | With strike box | NDE only |
| 10-133 | T-strike, square corner, with DPS magnet, 1-1/8 x 2-3/4 in. | 1-1/8 in. | With deep strike box, for fire door latch | NDE only |
Source Schlage's ND Series catalog, ND Series service manual and ND Series data sheet.
ALX and AL Series
ALX and AL Series strikes
Schlage's ALX Series catalog says locks are furnished with a 1-1/4 x 4-7/8 inch ANSI strike unless otherwise specified. The default has no dust box, and the box for the ANSI strike must be specified; the T-strikes come with a dust box.
Schlage's Strike Template Index groups the A and AL Series together and lists T-strikes, an ANSI strike, full lip strikes and a circular drive-in strike for them.
| Series | Part | What Schlage lists |
|---|---|---|
| ALX | 47267101 | Default. ANSI, 1-1/4 x 4-7/8 in., 1-3/16 in. lip, no dust box; includes retained screws |
| ALX | 10-025 | ANSI, lips of 1-3/16, 1-3/8 and 1-1/2 in.; includes screw pack |
| ALX | 10-013 | T-strike, square corner, with dust box, 1-1/8 x 2-3/4 in.; 1-1/8 or 1-1/2 in. lip |
| ALX | 10-016 | T-strike, square corner, deep dust box for the 3/4 in. fire latch, 1-1/8 x 2-3/4 in.; 1-1/8 in. lip |
| ALX | K510-066 | Box for ANSI strike, must be specified |
| ALX | LLL | Order code for a lock with no strike |
| A and AL | 10-001, 10-004 | T-strikes |
| A and AL | 10-025 | ANSI strike |
| A and AL | 10-026, 10-027 | Full lip strikes |
| A and AL | 10-058 | Circular drive-in strike |
Source Schlage's ALX Series catalog and service manual, and Schlage's Strike Template Index for the A and AL Series.
L Series
L Series mortise lock strikes
Schlage's L Series catalog says all L Series strikes are produced from brass or stainless steel, finished to match the lock trim and furnished complete with screws.
The service manual pairs the L9000 standard strike's lip lengths with door thickness ranges and says to specify the lip length when ordering; those ranges are in the lip section below.
On a pair of doors where a dummy (trim with no working latch) is used as the strike, the cut sheet says to order the armored front strike separately.
For the lock bodies these strikes pair with, see the commercial mortise lock guide.
| Part | Lip | Size, box and use |
|---|---|---|
| 10-072 | 1-3/16 in. standard; optional 7/8, 1, 1-1/2, 1-3/4 and 2 in. | 1-1/4 x 4-7/8 in. with dust box. Standard for the L9000 |
| 10-073 | No lip | 4-7/8 x 1-1/4 in. Standard deadbolt strike for L9460 Series deadlocks |
| 10-075 | No lip | 1/2 in. rabbeted. Use with the 1-1/16 in. armor |
| 10-078 | No lip | 1-1/4 x 4-7/8 in. with box. Optional for the L400 |
| 10-079 | No lip | 1-1/8 x 3-1/2 in. with box; strike box K510-053. Standard for the L400 |
| 10-091 | 1-3/16 in. | Armored front strike, no box. Specify hand of inactive leaf (the door of the pair that stays shut) |
| 10-144 | 1-3/16 in. | Square corner, for SK1, SL1 and HSLR trim; marked L and RR, 1-3/4 in. door |
| 10-145 | 1-3/16 in. | Square corner, for SK1, SL1 and HSLR trim; marked R and LR, 1-3/4 in. door |
Source Schlage's L Series catalog, L Series cut sheet and L Series service manual.
Lip length
How long a lip does the door need?
Allegion's knowledge base defines lip length as the dimension from the centerline of the strike screw holes to the edge of the lip. It says lip length depends on door handing (which way the door swings) and thickness.
On the T-strike templates, Schlage says the curved strike extension beyond the jamb must not be less than 3/16 inch, to ensure proper functioning of the latch bolt.
| Strike | Lip | Door thickness | Document |
|---|---|---|---|
| 10-072 | 1-3/16 in. (standard) | 1-3/8 to 1-7/8 in. | L Series service manual, lock series L9010 to L9496, extended equally |
| 10-072 | 1-1/2 in. | 1-7/8 to 2-1/8 in. | L Series service manual |
| 10-072 | 1-3/4 in. | 2-1/8 to 2-5/8 in. | L Series service manual |
| 10-072 | 2 in. | 2-5/8 to 3-1/8 in. | L Series service manual |
| 10-072 | 7/8 in., 1 in. | Not listed in that table | L Series catalog (optional lips) |
| 10-025, 10-072 | Specify lip length | ANSI standard strike for 1-3/4 in. doors | ND-Series Template Index; J918 and J919 templates |
| 10-087 | 1-3/16 in. | — | ND-Series Template Index |
| T-strikes on J928 and J929 | 1-1/8 in.; other lengths available | 1-3/8 to 1-3/4 in. | T-strike jamb templates |
Source Allegion's knowledge base entry on lip length for Schlage mortise lock strikes, the L Series service manual, the ND-Series Template Index and Schlage's strike jamb templates.
Frame prep
Frame prep and jamb templates
A jamb template is the installer's drawing of the cutout and screw holes for a strike in the frame. Schlage's Strike Template Index lists a wood jamb and a metal jamb template for each strike below.
The ANSI strike templates, one for wood jambs and one for metal, cover five strikes: the ND and L9000 defaults, the B Series ANSI strike and two L Series square corner strikes. Both show a cutout 4-7/8 inches tall, with #12-24 screws in two places.
On a wood jamb, the template sets the mortise depth (Dimension X) at 3/32 inch for the ND's default strike when a strike box is not specified, and at 5/32 inch for the L9000 standard strike and the 10-087 (the B Series ANSI strike) with a detached strike box. It adds 1/8 inch to that depth when a reinforcement plate is specified.
On a metal jamb, the template says the strike box is furnished detached for those two strikes but is not required, as the plaster guard (the box behind the strike opening) is furnished by the frame manufacturer. The drawing marks a 1 inch minimum plaster guard.
The T-strike templates show a cutout 2-3/4 inches tall and treat dimensions X and Y as variables dependent on door thickness. The L400 strike's wood jamb template shows a cutout 3-1/2 inches tall, with Dimension X at 5/32 inch for the detached strike box.
The ANSI and T-strike templates and the L400 wood jamb template each say strike location on frames must be adjusted for the thickness of door silencers (the rubber bumpers on the frame stop) when they are used.
For a rabbeted door and frame, where the edges are stepped, the ND Series service manual lists a kit in 605 and 626 finishes only that adapts a square corner latch and a 2-3/4 inch high square corner strike to 1/2 inch rabbeted preparations.
If the latch has stopped reaching the strike, start with why a commercial door won't close or latch. For frame construction, see commercial door frame types.
| Strike | Index description | Wood jamb | Metal jamb |
|---|---|---|---|
| 10-025 | ANSI, square corner, no box | J918 | J919 |
| 10-072 | ANSI, square corner, dual holes, specify box | J918 | J919 |
| 10-013 | T-strike, square corner, box, specify lip length | J928 | J929 |
| 10-016 | T-strike, square corner, deep box (for use with fire door latch) | J928 | J929 |
| 10-073 | ANSI, square corner, dual holes, deadbolt, box | J920 | J921 |
| 10-078 | ANSI, square corner, deadbolt, box | J920 | J921 |
| 10-079 | Mortise, square corner, deadbolt, no lip, box | J922 | J923 |
| 10-075 | Mortise, square corner, 1/2 in. rabbeted, no box | J557 | J557 |
| 10-091 | Mortise, armor front strike | J913 | J913 |
Source Schlage's Strike Template Index, its jamb templates for the ANSI strikes, the T-strikes and the 10-079, and the ND Series service manual.
Fire-rated openings
Which strike goes with a fire door latch?
Schlage's ND Series catalog says all ND Series latches have a 1/2 inch throw (how far the latch reaches out of the door) except the anti-friction fire door latch, which has a 3/4 inch throw. That latch is used for pairs of fire-rated doors.
| Lock | Latch | Strike Schlage lists |
|---|---|---|
| ND and wired ND | Anti-friction fire door latch, 14-042, 3/4 in. throw | 10-016 T-strike with deep strike box |
| NDE | Fire door latch | 10-133 T-strike with DPS magnet and deep strike box |
| ALX | 3/4 in. fire latch | 10-016 T-strike with deep dust box |
Source Schlage's ND Series catalog and service manual, and its ALX Series catalog.
Parts
Boxes, screws and special-order parts
This table is for the installer ordering parts. A strike box is the cup behind the strike's opening in the frame.
| Part | What it is | Document |
|---|---|---|
| K510-066 | ANSI plastic strike box. ND: ordered separately if required. ALX: must be specified | ND catalog and service manual; ALX catalog |
| K510-066 | Ships with the 10-072, 10-073 and 10-078 | L Series service manual |
| C603-256 | ANSI strike screw, 12-24 x 1 in. | ND service manual |
| C603-897 | Latch and strike screw, #8 x 3/4 in. | ND service manual |
| XQ02-309 | 10-013 strike, 7/8 in. flat lip | ND service manual, special parts |
| XQ07-351 | 10-025 strike, 7/8 in. flat lip | ND service manual, special parts |
| XQ03-494 | 10-013 strike, lip from 1-5/8 to 6 in. or from 6-1/8 to 12 in. | ND service manual, special parts |
| 39-030 | Rabbeted latch and strike kit (605, 626 only) for 1/2 in. rabbeted door and frame preparations | ND service manual |
| LIP1-1/8, LIP1-1/2 | Lip length order codes for a 1-1/8 or 1-1/2 in. lip | ND catalog |
| 37-015 | Wood frame reinforcer | L Series catalog |
Source Schlage's ND Series catalog and service manual, ALX Series catalog, L Series catalog and L Series service manual.
Service
Service for Schlage strikes and locks
Elwin Security installs, repairs and replaces Schlage strikes and locks as part of its commercial door repair service for commercial and multifamily properties in the San Francisco Bay Area. Calls are answered 8:00 AM-8:00 PM daily at (408) 539-0535.
FAQ
Schlage strike plate questions
What strike plate does a Schlage ND Series lock use?
Schlage lists the 10-025 as the ND default: an ANSI strike with no box, 1-1/4 x 4-7/8 inches with a 1-3/16 inch lip, for the ND and wired ND only. The NDE default is the same size with door position switch magnets.
What size is a Schlage L9000 strike?
The L9000 standard strike is 1-1/4 x 4-7/8 inches with a 1-3/16 inch lip. Optional lips are 7/8, 1, 1-1/2, 1-3/4 and 2 inches.
Which Schlage strike lip length fits a thicker door?
For the L9000 standard strike, Schlage pairs a 1-1/2 inch lip with doors 1-7/8 to 2-1/8 inches thick, a 1-3/4 inch lip with 2-1/8 to 2-5/8 inches and a 2 inch lip with 2-5/8 to 3-1/8 inches. The ND default strike comes in 1-3/16, 1-3/8 and 1-1/2 inch lips.
Does a Schlage 10-025 strike come with a box?
No. Schlage lists it with no box, and the ND Series service manual says the strike box must be ordered separately if required.
What is the difference between a Schlage T-strike and its ANSI strike?
Size and box. Schlage's 10-013 T-strike is 1-1/8 x 2-3/4 inches and includes a strike box; its 10-025 ANSI strike is 1-1/4 x 4-7/8 inches and is listed with no box.
Source Schlage's ND Series catalog and service manual, and its L Series catalog and service manual.
Sources and further reading
These sources back up the general guidance. Your building and the people who approve the work decide the details for your doors.
- Schlage: ND Series catalog (006501, Rev. 12/25)
- Schlage: ND Series service manual, locks manufactured after 1/31/17 (111524, Rev. 08/26)
- Schlage: ND Series data sheet (006486, Rev. 08/25)
- Schlage: ND-Series Template Index (Rev. 4/26)
- Schlage: NDE Series service manual (015478, Rev. 03/22)
- Schlage: ALX Series catalog (013231, Rev. 03/26)
- Schlage: ALX Series service manual (013523, Rev. 01/26)
- Schlage: L Series catalog (002899, Rev. 11/25)
- Schlage: L Series cut sheet (013141, Rev. 07/25)
- Schlage: L Series service manual (006500, Rev. 09/24)
- Schlage: L-Series Door Template Index (Rev. 05/25)
- Schlage: Strike Template Index (Rev. 01/22)
- Schlage: Template J918, strikes 10-025, 10-072, 10-087, 10-144, 10-145, wood jamb (Rev. 08/19)
- Schlage: Template J919, strikes 10-025, 10-072, 10-087, 10-144, 10-145, metal jamb (Rev. 08/19)
- Schlage: Template J928, strikes 10-001, 10-013, 10-016, 10-019, wood jamb (Rev. 06/14)
- Schlage: Template J929, strikes 10-001, 10-013, 10-016, 10-019, metal jamb (Rev. 06/14)
- Schlage: Template J922, strike 10-079, wood jamb (Rev. 06/14)
- Schlage: B Series Commercial Grade Deadbolts catalog (002234, Rev. 12/24)
- Allegion: Knowledge base: lip length for Schlage mortise lock strikes (archived copy)