Commercial Door HardwareA door strike plate may look like a simple piece of metal, but it plays an important role in how a door closes, latches, and locks. Choosing the wrong strike plate can cause a latch to bind, a deadbolt to miss its opening, or a door to require extra force to close.
When replacing door hardware, homeowners and contractors often focus on the lock, knob, lever, or deadbolt while overlooking the strike plate installed in the door frame.
However, strike plates are not all the same size or shape. Different doors and locksets may require T-strikes, full-lip strikes, ANSI strikes, deadbolt strikes, extended-lip strikes, or manufacturer-specific configurations.
This guide explains the different types of door strike plates, common sizes, how to measure a replacement, and what to check before ordering hardware for a residential or commercial door.
What Is a Door Strike Plate?
A door strike plate is the metal component mounted to the door frame where a latchbolt or deadbolt engages when the door closes.
Most strike plates have an opening that receives the latch or bolt, along with mounting holes used to secure the plate to the frame.
Depending on the design, the strike plate may also include a curved lip, dust box, reinforcement plate, or other components.
The strike plate works with the lock or latch installed in the door.
For a typical spring-latch door, the latchbolt contacts the strike lip as the door closes. The lip guides the latch inward until it aligns with the opening in the frame. The latch then extends into that opening to hold the door closed.
For a deadbolt, the extended bolt must enter the corresponding strike opening without binding.
Browse our Strike Plates collection to compare replacement door strikes and related hardware.
Why Is a Strike Plate Important?
The strike plate helps the latch or deadbolt engage correctly with the door frame.
A properly selected and installed strike plate can contribute to:
- Smooth door closing
- Reliable latch engagement
- Proper deadbolt operation
- Correct alignment between the door and frame
- Reduced wear caused by latch binding
- Appropriate support for the specified lock and frame configuration
On security openings, the strike plate, fasteners, frame construction, and any required reinforcement also contribute to the strength of the complete locking assembly.
However, a stronger strike plate alone cannot correct every weakness in a door or frame.
Types of Door Strike Plates
Several strike plate designs are commonly used in residential and commercial door hardware.
The correct type depends on the lock or latch, the door frame preparation, and the hardware manufacturer's specifications.
1. T-Strike Plates
A T-strike is a common strike plate configuration used with certain cylindrical locks, door knobs, door levers, and other latch hardware.
The name refers to the general shape of the strike.
A commonly encountered T-strike size is 1-1/8 inches wide by 2-3/4 inches tall.
However, not every product identified as a T-strike uses exactly these dimensions.
T-strikes may have square corners or rounded corners, depending on the model and frame preparation.
Some configurations include a strike box installed behind the plate.
When replacing a T-strike, verify the overall dimensions, screw-hole spacing, latch opening, corner shape, and lip length.
2. Full-Lip Strike Plates
A full-lip strike plate has an extended curved section designed to guide a spring latch as the door closes.
Full-lip strikes are commonly used with residential door knobs, levers, and other latch-operated hardware.
One common full-lip strike configuration measures 1-5/8 inches wide by 2-1/4 inches tall.
Full-lip strikes are available with different corner profiles.
For example, some use square corners, while others have rounded corners with a specified radius.
The curved lip must be appropriate for the relationship between the door, frame, and latch.
Do not assume that two full-lip strike plates are interchangeable simply because their outside dimensions appear similar.
3. ANSI Strike Plates
ANSI-style strike plates are commonly used on commercial door frames and locksets.
A widely used commercial ANSI strike size is 1-1/4 inches wide by 4-7/8 inches tall.
This larger strike configuration is frequently associated with commercial cylindrical and mortise lock applications.
However, the actual latch opening, lip length, box configuration, and compatibility depend on the lock manufacturer and series.
For example, a commercial cylindrical lock and a mortise lock may require different strike openings even when the outside strike plate dimensions are similar.
The correct strike should be selected using the hardware specification and existing frame preparation.
4. Deadbolt Strike Plates
A deadbolt strike plate receives the solid bolt that extends from a deadbolt lock.
Unlike many spring-latch strikes, a deadbolt strike does not necessarily need a curved lip to guide the bolt during door closing.
Many deadbolt strike plates therefore have a relatively simple opening without a projecting lip.
Some deadbolt hardware includes additional strike reinforcement components designed to strengthen the attachment to the door frame.
Before ordering a replacement, verify the deadbolt manufacturer's requirements for the strike plate, opening size, mounting hardware, and frame preparation.
Browse Deadbolts for compatible residential and commercial locking hardware.
5. Extended-Lip Strike Plates
Extended-lip strike plates are used when a standard strike lip is not long enough for the door and frame arrangement.
These can be needed on certain openings with unusual frame geometry, deeper door stops, decorative trim, or other conditions that affect latch engagement.
The purpose of the longer lip is to guide the latch properly into the strike opening.
Strike lip length is a specific hardware dimension. It should not be confused with the overall width of the strike plate.
Manufacturers may offer multiple lip-length options for the same basic strike design.
If an existing strike has an extended lip, measure it carefully and compare it with the manufacturer's dimensional drawing before ordering.
6. Adjustable Strike Plates
Some strike plates have an adjustable feature that allows limited changes to the position of the receiving opening or related component.
These products may help accommodate small alignment differences when used according to the manufacturer's instructions.
However, an adjustable strike plate is not a substitute for correcting a badly sagging door, improperly installed frame, or incompatible lock.
Always verify the adjustment range and the intended application of the exact product.
Common Door Strike Plate Sizes
Strike plate dimensions vary, but several sizes are frequently encountered.
Examples include:
- 1-1/8" x 2-3/4": Common T-strike and latch-strike configurations
- 1-5/8" x 2-1/4": Common full-lip strike configurations
- 1-1/4" x 4-7/8": Common commercial ANSI strike configurations
These dimensions are examples, not universal standards for every brand or lock series.
Other strike plate sizes and specialized configurations are available.
Do not order a replacement using only one measurement. Two strike plates can have the same outside dimensions but different latch openings, screw positions, lip lengths, or corner profiles.
How to Measure a Door Strike Plate
When replacing an existing strike plate, measuring the installed hardware is usually the most reliable starting point.
If the original strike is still present and functioning correctly, record its dimensions before removing it.
Step 1: Measure the Overall Height
Measure the strike plate from its top edge to its bottom edge.
Do not measure only the opening that receives the latch or deadbolt.
The overall height helps determine whether the replacement will fit the existing preparation in the door frame.
Step 2: Measure the Overall Width
Measure the strike plate's full width, including its lip where applicable.
Be careful when comparing products because manufacturers may identify overall width and lip length as separate dimensions.
Use the product drawing to determine exactly which measurement is being specified.
Step 3: Measure the Screw-Hole Spacing
Measure from the center of one mounting hole to the center of the other.
Screw-hole spacing is especially important when replacing an existing plate without changing the frame preparation.
A strike with the correct outside dimensions may still be incompatible if its mounting holes are positioned differently.
Step 4: Identify the Corner Shape
Look at the corners of the existing strike plate.
Common corner styles include square corners and radius corners.
If the corners are rounded, determine the specified radius when possible.
Replacing a rounded-corner strike with a square-corner version may require modification to the frame preparation.
On existing commercial or fire-rated openings, do not make those modifications without confirming they are permitted.
Step 5: Measure the Strike Opening
The opening in the strike plate must accommodate the latchbolt or deadbolt used by the lock.
Measure the opening's height and width and compare its location with the centerline of the existing latch or bolt.
Pay particular attention to mortise locks and other hardware that may use more than one bolt or an unusual latch configuration.
Step 6: Check the Lip Length
If the strike plate has a projecting lip, identify the lip length required by the door and frame.
Manufacturers commonly specify lip length using a centerline-to-lip measurement, but the exact reference points should be confirmed on the dimensional drawing.
Frame design, door thickness, and surrounding trim can affect the lip length needed.
Step 7: Identify the Lock Manufacturer
If possible, determine the manufacturer and lock series before buying a replacement strike plate.
Manufacturer identification is especially helpful with commercial cylindrical locks, mortise locks, electronic locks, and specialty deadbolts.
Many manufacturers supply replacement strikes using specific part numbers associated with a particular lock family.
Browse Schlage Strike Plates when replacing frame-side hardware associated with a Schlage lock.
Strike Plate Measurements vs. Door Backset
Strike plate dimensions and door backset are different measurements.
Backset refers to the distance from the edge of the door to the centerline of the lock preparation.
Strike plate measurements describe the hardware installed in the frame.
Both matter when replacing a complete lockset or correcting a door-hardware compatibility problem.
For additional information, read our guide explaining what door backset is and how to measure it.
Door Latch Strike Plates vs. Deadbolt Strike Plates
A spring-latch strike and a deadbolt strike perform related but different functions.
A spring latch retracts as the door closes and extends into the strike opening when properly aligned.
A deadbolt generally requires a key, thumbturn, or other operating mechanism to extend and retract the bolt.
Because these locking components operate differently, their strike plates may have different openings and designs.
When replacing either type, verify the required frame preparation and any manufacturer-specified reinforcement components.
Browse our Door Latches collection when replacing latch hardware, or explore the broader selection of replacement strike plates.
What Is the Difference Between a Strike Plate and a Latch Faceplate?
These two components are commonly confused.
The strike plate mounts to the door frame.
The latch faceplate mounts to the edge of the door around the latch mechanism.
They are separate components and must be selected according to their respective door and frame preparations.
For example, a latch faceplate may measure 1 inch by 2-1/4 inches, while its matching strike plate uses a completely different size.
Do not order a replacement strike based solely on the dimensions of the latch faceplate.
How Do Strike Plates Work With Mortise Locks?
Mortise locks use a lock case installed inside a rectangular pocket in the edge of the door.
Depending on the function, a mortise lock may include a latchbolt, deadbolt, auxiliary deadlocking component, or combination of locking elements.
The strike plate must have the correct opening configuration to accommodate those components.
A mortise strike therefore should not be selected simply because it has the same outside dimensions as an existing cylindrical-lock strike.
When ordering replacement hardware for a mortise lock, identify the exact manufacturer, series, function, and strike part number whenever possible.
For more information about the difference between these commercial lock constructions, read our Mortise Lock vs. Cylindrical Lock guide.
Mechanical Strike Plates vs. Electric Strikes
A mechanical strike plate provides a receiving opening for the lock's latch or bolt.
An electric strike is an electrically operated locking component that can release a compatible latch through a controlled mechanism.
Electric strikes are commonly used with access-control systems, credential readers, intercoms, and other controlled-entry applications.
However, replacing a mechanical strike with an electric strike requires more than matching the visible faceplate dimensions.
Compatibility can depend on the latch type, lock function, door and frame preparation, voltage, fail-safe or fail-secure requirements, fire listing, and other system specifications.
Browse Electric Strikes to compare products intended for electronic access-control applications.
Why Won't My Door Latch Into the Strike Plate?
A door that will not latch properly does not necessarily need a new strike plate.
The problem may involve the strike, but it can also originate elsewhere in the opening.
Common causes include:
- Misaligned strike plate
- Sagging door
- Loose or worn hinges
- Improper latch position
- Incorrect strike opening
- Wrong strike lip length
- Door or frame movement
- Damaged latch components
- Incorrectly installed replacement hardware
Before replacing the strike plate, inspect the door's operation and determine where the latch contacts the frame.
If the door closes correctly but the latch does not engage, the problem may be related to strike alignment.
If the door rubs against the frame or will not close fully, hinge adjustment, frame alignment, or another underlying issue may need attention.
Why Does My Door Latch Bind?
Latch binding occurs when the latch cannot move freely through its intended operation.
One possible cause is an incorrectly positioned strike plate.
On some deadlocking latch designs, an auxiliary deadlocking plunger must remain depressed against the proper part of the strike when the door is closed.
If that plunger enters the strike opening instead, the latch may bind and the locking hardware may not function as designed.
This condition can also cause premature wear or damage.
If a latch becomes difficult to retract after the door closes, check the manufacturer's installation instructions rather than forcing the lever, knob, or key.
Can You Adjust a Strike Plate?
Some strike plate configurations allow limited adjustment.
However, the correct solution depends on the source of the alignment problem.
For example, adjusting a strike plate may not correct a door that has dropped because of loose hinges.
Similarly, enlarging the strike opening may create problems if the latch or auxiliary deadlocking component no longer engages correctly.
On fire-rated openings, commercial security doors, and doors with specialized hardware, alterations should be evaluated against the manufacturer's instructions and applicable listing requirements.
How to Replace a Door Strike Plate
Replacing a strike plate can be straightforward when the replacement matches the existing preparation.
For a typical non-rated residential door:
- Identify the existing lock or latch.
- Record the strike plate dimensions and screw-hole spacing.
- Confirm the corner shape and required lip length.
- Remove the old strike plate with the door open.
- Check the frame and mounting holes for damage.
- Install the correct replacement strike using suitable manufacturer-approved fasteners.
- Verify that the latch or deadbolt enters the opening correctly.
- Test the door several times before returning it to normal use.
Do not force the lock to operate against a misaligned strike.
If the original hardware was part of a listed fire-door assembly or another regulated opening, use the appropriate replacement and follow the applicable instructions and requirements.
Do Longer Strike Plate Screws Improve Security?
Some security-oriented strike assemblies include reinforcement plates and longer mounting screws designed to engage structural framing behind a wood door jamb.
These components can be part of a stronger door-frame attachment system when installed as specified.
However, not every strike plate or frame is designed for the same screw length or fastening method.
Commercial hollow-metal frames, wood frames, and specialized door assemblies have different fastening requirements.
Use the manufacturer's specified hardware rather than assuming longer screws are automatically suitable for every application.
What Is a Strike Plate Dust Box?
A strike box or dust box is a component located behind certain strike plates.
Depending on the design, it can help cover the recess in the frame and provide a finished enclosure behind the strike opening.
Some products also incorporate reinforcement features, although a basic dust box should not automatically be treated as a security reinforcement component.
Not every strike plate requires a separate box.
When ordering replacement parts, determine whether the strike is supplied with a box, requires a separately ordered box, or is intended for an existing frame preparation.
Are Strike Plates Universal?
No.
Many strike plates share common dimensions, but that does not make all of them universally interchangeable.
Compatibility may depend on:
- Manufacturer
- Lock series
- Latch or bolt configuration
- Overall dimensions
- Opening dimensions
- Screw-hole spacing
- Corner radius
- Lip length
- Frame material
- Strike box requirements
- Door handing or other special preparations
- Required listings and certifications
Matching the original manufacturer's strike part number is often the most reliable option for a replacement project.
How to Choose a Replacement Strike Plate
Start with the existing opening rather than selecting a strike based only on appearance.
If the original strike is available, compare it with the dimensional drawings supplied for the replacement product.
For commercial applications, review the hardware schedule or manufacturer's installation instructions whenever possible.
For residential replacement work, the existing plate and lock model can often provide the information needed to identify the correct component.
Factory Direct Hardware offers replacement strike plates, including brand-specific components such as Schlage Strike Plates and Don-Jo Strike Plates.
Common Mistakes When Ordering Strike Plates
Ordering by Appearance Alone
Two strike plates can look similar but have different openings, mounting dimensions, or intended applications.
Confusing a Latch Faceplate With a Strike Plate
The latch faceplate mounts on the door edge. The strike plate mounts on the frame.
Ignoring Screw-Hole Spacing
Even if the plate fits the existing recess, its mounting holes may not align correctly.
Ignoring Lip Length
A lip that is too short or improperly positioned can affect how the latch enters the strike.
Assuming Any ANSI Strike Will Fit Any Commercial Lock
Commercial strikes must match the lock and frame preparation, not simply an ANSI-style outside dimension.
Replacing a Strike Without Checking Door Alignment
A new strike may not solve a problem caused by sagging hinges or frame movement.
Modifying Fire-Rated Hardware Without Verification
Changing a listed opening can affect its compliance. Always confirm approved components and installation requirements.
Door Strike Plate Replacement Checklist
Before ordering a replacement strike plate, confirm:
- Lock or latch manufacturer
- Lock series or model
- Strike plate type
- Overall height
- Overall width
- Mounting-hole spacing
- Latch or deadbolt opening dimensions
- Square or radius corners
- Lip length
- Door and frame preparation
- Frame material
- Strike box or reinforcement requirements
- Required finish
- Fire-rating or other listing requirements
If any of these measurements are unclear, compare the manufacturer's dimensional drawings before ordering.
Frequently Asked Questions About Door Strike Plates
What Is the Standard Door Strike Plate Size?
There is no single universal size. Common examples include 1-1/8" x 2-3/4" T-strikes, 1-5/8" x 2-1/4" full-lip strikes, and 1-1/4" x 4-7/8" commercial ANSI strikes. Verify the exact product dimensions before purchasing.
What Is a Full-Lip Strike Plate?
A full-lip strike plate has a curved lip designed to guide a spring latch into the receiving opening as the door closes.
What Is a T-Strike Plate?
A T-strike is a strike plate configuration commonly used with certain door latches and locksets. Common examples measure 1-1/8" x 2-3/4", but dimensions and configurations vary.
What Is an ANSI Strike Plate?
An ANSI-style strike is commonly used with commercial door hardware and standardized frame preparations. A widely encountered size is 1-1/4" x 4-7/8". The correct opening and configuration depend on the lockset.
Are Deadbolt and Latch Strike Plates the Same?
Not necessarily. A spring latch and a deadbolt operate differently, so their strike plates may use different openings, lips, reinforcement components, and frame preparations.
Can I Replace Only the Strike Plate?
Often, yes, when the existing lock and frame are otherwise suitable and a compatible replacement strike is available. However, some problems require correcting door alignment or replacing other hardware.
Why Won't My Deadbolt Enter the Strike Plate?
Possible causes include an improperly positioned strike, door sag, frame movement, an incompatible replacement, or a damaged lock. Determine the cause before modifying the strike opening.
What Is an Extended-Lip Strike Plate?
An extended-lip strike has a longer projecting lip than the standard configuration for a particular strike family. It is intended for applications where the door and frame geometry require additional latch guidance.
Do Strike Plates Have Different Corner Radii?
Yes. Some strike plates use square corners, while others have rounded corners with specific radii. The replacement should match the existing preparation.
Can I Use a Residential Strike Plate on a Commercial Door?
Only when the strike is compatible with the specified lock, frame preparation, and applicable requirements. Commercial hardware should be selected according to the manufacturer's specifications and project documentation.
Can a Strike Plate Affect Door Security?
Yes. The strike plate and its attachment are part of the overall locking assembly. However, security also depends on the lock, frame, door, fasteners, reinforcement, and installation.
Do Electric Strikes Replace Regular Strike Plates?
An electric strike can replace or supplement the mechanical strike function in certain compatible access-control applications, but the lock and frame must be suitable for the selected device. Electrical and listing requirements must also be considered.
Choosing the Right Door Strike Plate
The best replacement strike plate is the one that matches the actual lock and door-frame preparation.
Begin by identifying the existing lock or latch. Then measure the strike plate height, width, screw-hole spacing, corner profile, opening dimensions, and lip length.
For commercial hardware, also verify the manufacturer, lock series, required strike configuration, and any fire or security listing requirements.
A strike plate that fits correctly and allows the latch or deadbolt to operate as designed is more important than choosing a replacement based only on appearance or finish.
Shop Factory Direct Hardware's Strike Plates, Schlage Strike Plates, Don-Jo Strike Plates, Door Latches, and Deadbolts to compare compatible replacement hardware.
For additional door hardware selection and installation information, visit our Hardware Learning Center.
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