
( Brand: Donjo ), ( Manufacturer Part Number: 2-PBSP-135-630 ), ( Type: Star Plate )
The **Donjo 2-Piece PBSP-135-630 80x Pack (3/5 OD Door Knob Hold Scar Plate)** is a high-quality, precision-engineered steel security plate designed to enhance the strength and durability of standard door hardware, particularly for use with 2-1/8" (54mm) diameter door knobs and lever handles. Crafted from robust **spring steel**, this scar plate is engineered to resist wear, corrosion, and excessive force, making it an ideal solution for both residential and commercial applications where security and longevity are paramount. The **80x pack size** ensures ample inventory for large-scale installations, whether for new construction, renovations, or bulk replacements, while the **3/5 OD (outside diameter) compatibility** guarantees a seamless fit with a wide range of door hardware systems, including those commonly found in European, American, and other global standards.
This **two-piece design** comprising a primary scar plate and a complementary backing plate provides superior load distribution, reducing the risk of deformation under stress and extending the lifespan of the door mechanism. The **135-degree angle** of the scar plate is strategically optimized to minimize friction and wear on the door knob s internal components, ensuring smooth operation over time. Made from **high-grade steel**, the plate is treated to resist rust, chipping, and bending, even in high-traffic or harsh environmental conditions. Its **clean, minimalist profile** also allows for easy installation without compromising the aesthetic appeal of the door assembly, making it a practical yet unobtrusive security upgrade.
Ideal for use in **entry doors, interior doors, and commercial settings**, this scar plate is particularly well-suited for applications where durability and security are critical, such as in office buildings, hotels, or high-security residential properties. The **bulk packaging** of 80 units per box ensures cost-effective procurement for contractors, architects, and DIY enthusiasts alike, while its universal compatibility with standard door hardware systems simplifies inventory management. Whether reinforcing an existing door setup or integrating into a new construction project, the **Donjo PBSP-135-630** delivers a reliable, long-lasting solution that balances strength, functionality, and ease of installation.
### **Pros and Cons of buying a Donjo 2-PBSP-135-630 (80x Pack, 3/5 OD Door Knob Hold Scar Plate, Steel, SP 135, 2-1/8")**
#### **Pros:**1. **Durability and Strength** Made from steel, this scar plate is designed to withstand significant force, making it suitable for high-security applications. The 135-degree angle and reinforced construction help resist forced entry attempts, including kicks, prying, and drilling.
2. **Compatibility with Security Products** The 2-1/8" thickness and 3/5 OD (outer diameter) dimensions ensure it fits standard security door hardware, including high-security locks, deadbolts, and reinforced strike plates. It works well with brands like Schlage, Kwikset, and Medeco.
3. **Enhanced Security Against Common Attacks**
- **Kick Resistance:** The angled design (135 degrees) helps deflect kick forces away from the lock mechanism.
- **Pry Resistance:** The reinforced steel plate prevents tools like crowbars from prying the door open.
- **Drill Resistance:** The hardened steel makes it harder for intruders to drill through compared to standard strike plates.
4. **Easy Installation** Designed for quick and straightforward installation, often requiring only a drill and screws. Many models include pre-drilled holes for compatibility with existing door frames.
5. **Cost-Effective Upgrade** Compared to full door reinforcement kits, this scar plate offers a budget-friendly way to significantly improve security without major modifications.
6. **Aesthetic and Functional** Available in a polished steel finish, it blends well with modern door hardware while providing functional protection.
7. **Warranty and Brand Reputation** Donjo is a reputable brand in the security hardware market, often backed by warranties or customer support, ensuring reliability.
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#### **Cons:**1. **Limited to Specific Door Types** May not fit all door frames, especially older or non-standard ones. Measurement precision is critical; incorrect sizing can lead to installation issues or gaps that compromise security.
2. **Requires Professional Installation for Optimal Effectiveness** While easy to install, improper placement (e.g., not aligning with the door s hinge side or strike plate) can reduce its effectiveness. A misaligned scar plate may not deflect kicks or pry attempts as intended.
3. **Not a Standalone Security Solution** While it improves resistance to certain attacks, it should be part of a broader security strategy, including high-quality locks, reinforced doors, and possibly a security system. Relying solely on this plate may leave vulnerabilities (e.g., weak hinges or glass panels).
4. **Potential for Overkill in Low-Risk Areas** For homes or businesses in very low-crime areas, the cost may not justify the upgrade. The benefits are more pronounced in high-risk or high-value locations.
5. **Weight and Installation Constraints** The steel plate adds weight, which may require additional support if the door frame is weak. Over-tightening screws can damage the door or frame over time.
6. **Compatibility Issues with Some Locks** Certain high-end or specialty locks may not align perfectly with the plate s dimensions, requiring customization or additional hardware.
7. **Aesthetic Limitations** The industrial steel look may not suit all interior designs. Some users prefer more discreet security solutions.
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### **Conclusion:**The **Donjo 2-PBSP-135-630 scar plate** is a **highly effective, cost-efficient upgrade** for enhancing door security against common forced-entry methods like kicking, prying, and drilling. Its steel construction, angled design, and compatibility with standard security hardware make it a **strong choice for homes, small businesses, or rental properties** where security is a priority. However, it is **not a universal fix** it must be installed correctly and paired with other security measures (e.g., reinforced doors, smart locks) for comprehensive protection.
For **high-risk environments** (e.g., commercial properties, luxury homes, or areas with frequent break-ins), this plate is **highly recommended**. For **low-risk areas**, the investment may be unnecessary unless specific threats (e.g., kick-resistant doors) are a concern.
### **Recommendation:** - **Buy it if:**- You live in a high-crime area or need to secure a door with weak points.
- You re upgrading an existing lock to a higher-security model (e.g., deadbolt or keyless entry).
- You prioritize resistance to common forced-entry tactics without a full door replacement.
- You re willing to invest in a **long-term security solution** that adds minimal cost compared to full door reinforcement.
- **Avoid or reconsider if:**- Your door frame is non-standard or poorly maintained (may require additional reinforcement).
- You re on a tight budget and can t pair it with other security upgrades.
- The aesthetic doesn t match your decor, and you prefer a more discreet solution.
- You re unsure about installation consider hiring a locksmith for proper placement.
**Final Verdict:** This scar plate is a **smart, practical purchase** for anyone looking to significantly boost door security affordably. Pair it with a **high-quality lock** (e.g., Schlage Camelot or Medeco) and **reinforced hinges** for maximum protection.
Each box has 10 sets. 80x Pack Lot 3/5 OD Door Knob Hold Scar Plate Stainless Steel SP 135 2-1/8 ID: 135. If 2 make a set then 40 sets. All I can say is that you're getting 80 of the rings.