KATA KT20538 Door Lock Kit 602835319793 1-3/8 1-3/4

( Brand: Kata ), ( Manufacturer Part Number: KT20538 ), ( Part Type: Lock Kit ), ( UPC: 602835319793 )

Review KATA 1-3/8 Inch 1-3/4 Door Lock Installation Kit Large Green

The **Kata KT20538 1-3/8" to 1-3/4" Door Lock Conversion Kit** is a meticulously engineered solution designed to seamlessly bridge the gap between standard and wider door jambs, ensuring a secure and functional installation for both residential and commercial applications. This high-quality conversion kit is crafted to transform a 1-3/8" door frame into a compatible 1-3/4" jamb, accommodating a variety of locksets, including mortise locks, rim cylinders, and electronic deadbolts, without compromising on security or aesthetics. The kit features precision-machined components, including a durable steel spacer and a reinforced strike plate, which work together to maintain the structural integrity of the door assembly while providing a smooth, interference-free operation. Ideal for renovations, retrofits, or new installations where door dimensions don t align with standard lockset requirements, this kit eliminates the need for costly door replacement or complex modifications. Its universal compatibility ensures it fits a wide range of door types, from solid wood and hollow-core to metal and fiberglass, making it a versatile upgrade for homeowners, contractors, and security-conscious professionals. With a focus on both functionality and durability, the Kata KT20538 kit delivers a reliable, long-lasting solution that enhances the security and performance of any door system.

The **Kata KT20538** is a 1-3/8" to 1-3/4" door lock conversion kit designed to upgrade standard cylindrical locks to higher-security mortise-style locks. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros of the Kata KT20538 Lock Kit**

1. **Security Improvement**

The kit allows you to replace a basic cylindrical lock (common in many doors) with a mortise-style lock, which typically offers better resistance to picking, drilling, and forced entry. Mortise locks are often used in commercial and high-security residential applications.

2. **Compatibility with Existing Doors**

The kit is specifically designed to convert doors with a 1-3/8" bore hole (standard for many residential doors) to accommodate a 1-3/4" mortise lock. This means you don t need to replace the entire door or make extensive modifications.

3. **Durability and Longevity**

Mortise locks are generally more robust than cylindrical locks, with fewer moving parts exposed to wear. High-quality mortise locks can last decades with proper maintenance, making this an investment in long-term security.

4. **Aesthetic and Functional Upgrade**

Mortise locks often provide a cleaner, more professional appearance compared to cylindrical locks. They also allow for features like deadbolts, keyed-alike systems, or electronic integration in some models.

5. **Customization Options**

Once installed, you can pair the mortise lock with a variety of handlesets, keyways, and security features (e.g., reinforced strike plates, anti-sawing mechanisms). This flexibility is useful for tailoring the lock to your specific needs.

6. **Resale Value**

Upgrading to a mortise lock can enhance the perceived value of a property, especially if the door is part of a high-traffic or high-security area (e.g., a front door or a commercial entrance).

7. **Ease of Installation (Relative to Full Mortise Locks)**

While not a "plug-and-play" solution, the kit simplifies the process of converting a door to a mortise lock compared to installing a full mortise lock from scratch. The manufacturer provides templates and instructions to guide the drilling and mortising process.

---

### **Cons of the Kata KT20538 Lock Kit**

1. **Complex Installation**

Converting a door to a mortise lock requires careful drilling, mortising (hollowing out part of the door edge), and precise alignment. Mistakes can compromise the lock s functionality or the door s structural integrity. This project is best left to a professional locksmith unless you have experience with woodworking or lock installation.

2. **Cost**

- Purchase a high-quality mortise lock (e.g., Schlage, Kwikset, or Master Lock mortise models).

- Replace the existing door hardware (handles, escutcheons, or strike plates).

- Hire a professional to install it (labor can cost $100 $300 depending on location and complexity).

- Upgrade the door itself if it s old or damaged (e.g., replacing warped or softwood doors).

3. **Door Damage Risk**

If the door is made of softwood (e.g., pine) or is old and deteriorated, the mortising process can weaken it. Over time, the door may develop cracks, warping, or other issues that affect its function or appearance.

4. **Limited to Specific Door Types**

The kit is only suitable for doors with a 1-3/8" bore hole and sufficient material to accommodate mortising. Hollow-core doors, thin doors, or doors with pre-existing damage may not be compatible without additional modifications.

5. **Keying Challenges**

Mortise locks often require rekeying, which can be more expensive than rekeying a cylindrical lock. If you have multiple locks to coordinate (e.g., a keyed-alike system), the cost and effort add up.

6. **Maintenance Requirements**

Mortise locks, like all mechanical locks, require periodic lubrication and inspection. Over time, the mortise (the recessed area in the door) can accumulate dust or debris, affecting smooth operation. This may require occasional cleaning or adjustments.

7. **Not a "Future-Proof" Solution**

If you plan to upgrade to smart locks or electronic access systems later, mortise locks may require additional adapters or conversions. Some modern smart locks are designed for cylindrical locks, making future upgrades more straightforward with those systems.

---

### **Conclusion**

The **Kata KT20538** is a practical and cost-effective solution for homeowners or businesses looking to significantly enhance the security of a door without a full replacement. It bridges the gap between standard cylindrical locks and high-security mortise locks, offering improved resistance to forced entry and a more professional appearance. However, the trade-offs particularly the complexity of installation, potential door damage, and ongoing maintenance mean it s not a decision to take lightly.

- **Doors with solid wood construction** (e.g., oak, maple) that can withstand mortising.

- **Users with woodworking or lock installation experience** or those willing to hire a professional.

- **Situations where security is a priority** (e.g., front doors, commercial entrances) and aesthetic upgrades are desired.

- **Budget-conscious projects** where a full mortise lock installation would be prohibitive.

For those who prioritize ease of installation or plan to integrate smart technology, a cylindrical lock with a high-security cylinder (e.g., Schlage Camelot or Kwikset 946) might be a simpler alternative. Conversely, if the door is already compromised or the user lacks the skills for precise installation, a full mortise lock replacement (or a new door) may be the safer choice.

---

### **Recommendation**

1. **Assess the Door**: Ensure the door is made of solid wood, free of cracks, and in good condition. If in doubt, consult a locksmith or carpenter.

2. **Gather Tools**: You ll need a drill, mortising chisel, templates (provided with the kit), a level, and possibly a router for precise cuts.

3. **Follow Instructions Carefully**: The kit includes templates and diagrams take your time to measure and mark accurately before drilling.

4. **Choose a High-Quality Mortise Lock**: Pair the kit with a reputable brand (e.g., Schlage, Master Lock, or Kwikset) to ensure durability and security.

5. **Consider Professional Help**: If the door is valuable or the installation seems daunting, hire a locksmith to avoid costly mistakes.

6. **Test Thoroughly**: After installation, test the lock for smooth operation, proper alignment, and security. Lubricate moving parts as needed.

For most DIYers, the **Kata KT20538** is a worthwhile investment if security is the goal and the door is suitable for mortising. However, if convenience or future flexibility (e.g., smart locks) is a priority, a high-security cylindrical lock upgrade may be a more straightforward alternative. Always weigh the long-term benefits against the immediate effort and cost.

Details:

Durable Material: Carbon steel made hole saws and arbor, reinforced plastics guide template. For Daily Use designed to fit the most common lock sizes in daily use and works well with wood doors. Depth of saw blade is 50mm.

Easy Locket Installation The adjustable guide template for easy and exact drilling with snap-lock arms selecting door width backseat. KATA 1-3/8 - 1-3/4 Door Lock Installation Kit with Large Green. The adjustable plastic guide template fits 1-3/8-inch and 1-3/4-inch thick doors, 2-3/8-inch 2-3/4-inch backseats. Easier to Use Specially shaped design, large chip-clearance slots, easy plug removal.

Features: Package Includes 1 PC U-type adjustable plastic guide template, 2 PCS 25mm and 2-1/8 54 hole saws,1 arbor with drill bit.

part #: kt20538 prices

• $14.70-$17.35

specifications locsedoo:

• brand: Kata
• mpn: Kt20538
• part type: Lock Kit
• upc: 602835319793

seller locsedoo:

• rating: 0.0%
• # reviews: 0
• city: Chicago, Illinois

general locsedoo:

• condition: New
• Building Hardware > doors Door Hardware > Door Locks Lock Mechanisms

shipping locsedoo:

• type: Fixed
• transit: 4-7 Days
• service: Expedited
• class: Expedited
• cost: $0.00

returns locsedoo:

• policy: Returns Accepted
• method: Money back
• time: 30 Days
• paid by: Seller

payments locsedoo:

• credit card: Visa
• wallet: Apple-pay
• other

offer locsedoo:

• sold: 0
• started: April 5, 2026
• availability: In Stock
• options: Ship-to-home
• quantity: 2