SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware
SENY Door Knob & Deadbolt Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security - Seny Hardware

SENY Door Reinforcement Plate – Heavy Duty Lock Reinforcer for Door Repair & Security

$29.99
or 4 interest-free payments of $20.00 with Shop Pay
  • Heavy-Duty Door Reinforcement
  • Improves Door Security
  • Reinforces Weak Lock Areas
  • Ideal for Door Repairs
  • Multiple Plate Options
Color:Matte Black
Function:No-Hole
Size:Height 4-1/2" + Width 4-5/16" + Door Thickness 35mm
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✔ FREE U.S. SHIPPING

Free shipping on all orders.

✔ SHIPS FAST FROM U.S.

Most orders dispatch within 1 business day.

✔ EASY RETURNS & WARRANTY

30-day returns + 2-year coverage.

FAQ

  1. Can Seny hardware be customized for DIY projects?
    We offer personalized engraving services for DIY enthusiasts, making every door handle truly one of a kind and connecting the warmth of home with a personal touch.
  2. What finishes are available for door hardware?                                                        Seny Hardware offers a wide range of finishes, including Matte Black, Brushed Copper, Faux Gold, Brushed Red Bronze, Highlighted Red Bronze, Brushed Nickel, Polished Chrome, Antique Brass, Aged Brass, and Champagne Bronze — crafted to elevate any interior.
  3. Is Seny Hardware suitable for the exterior of my house?                                        Yes, our door handles and pulls are protected with a powder-coated anti-corrosion finish and have undergone rigorous quality testing for residential use. In addition, all of our hardware is thoroughly tested for quality before shipping.               
  4. How quickly can I get my order?                                                                               
    Most orders ship within 1–2 business days, and transit time varies by location—typically 2–7 days (Standard) or 1–2 days (Expedited). You’ll receive a tracking number once your package ships!
  5. Do your mortise locksets include keys?      
    Yes, the package contains one deadbolt, strike plate, latch, and two skeleton keys.
  6. What is the backset of your mortise lock?                                                                2.36"– We do not offer any other size.
  7. Will your interior mortise lock chassis fit all older doors with mortise locks?      Compatible with most interior doors and can adapt 2.36"backset.
  8. Are crystal door knobs hard to use in winter because they feel cold?                   While crystal naturally feels cooler to the touch during winter, they will warm up quickly with use.Many customers choose them because they not only function perfectly as hardware but also add a unique decorative accent that elevates the entire space.
  9. What do I do if someone locks themselves in a room?                                            There is a small hole in the Rosette or Plate on the exterior side of the door that can be used to unlock a “locked” privacy door. Insert a straightened paper clip or something of similar size into the privacy hole and gently push to unlock the privacy.

  10. Do the screw holes match?                                                                                         Generally, our screw holes and locks are designed to be compatible. If you encounter any mismatch issues, please take a photo and contact our after-sales customer service for help.                                                                                         

Select your function

Why Customers Love It

TIMELESS DECORATIVE DESIGN

Thoughtfully crafted hardware that adds refined character to doors, drawers, and cabinets.

SOLID & DURABLE CONSTRUCTION

Built with quality metal components for smooth performance and dependable everyday use.

EASY INSTALLATION & FUNCTION

Standard fitting and practical configurations make setup simple for interior and entry applications.

MULTIPLE FINISHES & OPTIONS

Available in versatile finishes and styles to complement both modern and vintage homes.

Door Reinforcement Plate for Door Repair & Security Upgrades

Restore strength, improve security, and extend the life of damaged doors with this heavy-duty door reinforcement plate. Designed to reinforce door knob and deadbolt areas, it helps repair weakened lock openings, cover damage, and provide additional protection against everyday wear and forced entry.

Ideal for repairing damaged doors without the cost of full door replacement.

Heavy-Duty Metal Construction

Built from durable metal for reliable reinforcement and long-term performance.

  • Strong metal construction
  • Resistant to bending and wear
  • Designed for high-stress lock areas
  • Built for everyday use

Provides dependable support where doors need it most.

Reinforces Door Knob & Deadbolt Areas

Designed to strengthen the areas most vulnerable to damage and repeated use.

  • Reinforces door knob openings
  • Supports deadbolt installations
  • Helps prevent further cracking or splitting
  • Covers damaged lock areas

A practical solution for both repairs and preventative reinforcement.

Improves Door Security

Adds additional protection around lock hardware to help strengthen weak points.

  • Strengthens lock mounting areas
  • Improves overall door stability
  • Supports secure hardware installation
  • Helps increase resistance to forced entry

Ideal for both residential repairs and security upgrades.

Multiple Plate Configurations

Available in several configurations to match different repair needs.

  • No-Hole Reinforcement Plate
  • Single-Hole Reinforcement Plate
  • Extended Single-Hole Reinforcement Plate

Choose the coverage level best suited for your door condition.

Compatible with Standard Residential Doors

Suitable for many common door types and lock preparations.

  • Wood doors
  • Metal doors
  • Interior doors
  • Entry doors

Always verify dimensions before installation.

Ideal for Door Repair Projects

Perfect for:

  • Repairing damaged doors
  • Reinforcing weak lock areas
  • Covering damaged hardware openings
  • Restoring worn door surfaces
  • Security upgrade projects

A cost-effective alternative to replacing an entire door.

Dimensions & Specifications

No-Hole Plate

  • Height: 4-1/2"
  • Width: 4-5/16"
  • Thickness: 1-3/8"

Single-Hole Plate

  • Height: 4-1/2"
  • Width: 3-7/8"
  • Thickness: 1-3/8"
  • Hole Diameter: 2-1/8"

Extended Single-Hole Plate

  • Height: 9"
  • Width: 3-7/8"
  • Thickness: 1-3/8"
  • Hole Diameter: 2-1/8"

Built for Everyday Use

Designed for long-term durability and dependable performance.

Backed by a 2-Year Warranty.

Important Notes

  • Due to production batch variations, slight color differences may occur

  • California Proposition 65 Warning
    Cancer and Reproductive Harm — www.P65Warnings.ca.gov