
( Brand: Kwikset ), ( Color: Satin Nickel ), ( Custom Bundle: Yes ), ( Material: Nickel ), ( California Prop 65 Warning: For Parts Only Major Pieces Of Deadbolt And Hardware Missing See Photos ), ( Type: Deadbolt ), ( Finish: Satin ), ( Country Of Origin: Mexico ), ( UPC: 883351463478 )
The **Kwikset 883351463478 159 Double Cylinder Deadbolt (Model 91590-019)** is a premium, high-security locking solution designed to provide unmatched protection for residential and light-commercial entry doors. Engineered with Kwikset s signature reliability and durability, this double-cylinder deadbolt combines robust construction with advanced security features to deter forced entry while maintaining ease of use. The **91590 series** is built with a **915-grade steel core**, ensuring resistance against drilling, prying, and picking, making it an ideal choice for homeowners seeking enhanced security without compromising on functionality. Its **smooth-operating mechanism** is complemented by a **durable brass interior trim**, which not only enhances aesthetic appeal but also resists corrosion, ensuring long-term performance even in humid or coastal environments. The deadbolt features a **one-piece deadbolt body**, eliminating weak points that could be exploited by intruders, while the **high-security cylinder** includes a **patented anti-sawing design** that prevents tools from cutting through the keyway, further bolstering defense against forced entry. Installation is simplified with Kwikset s **pre-aligned strike plate**, which ensures a perfect fit with most standard doors, and the **adjustable latch** allows for precise alignment to prevent sticking or misalignment over time. Whether used as a standalone security upgrade or as part of a layered defense system, this deadbolt delivers peace of mind with its **ANSI Grade 1 security rating**, making it a trusted choice for those who prioritize both safety and quality. Its sleek, modern design also complements a wide range of architectural styles, blending seamlessly with existing hardware for a cohesive and polished look.
### **Pros and Cons of buying a Kwikset 883351463478 (91590-019) Double Cylinder Deadbolt**
#### **Pros:**1. **High Security Rating** The 91590 series is part of Kwikset s **Grade 1** deadbolt line, which is the highest security rating available for residential locks. It meets ANSI/BHMA Grade 1 standards, offering strong resistance to picking, drilling, and bumping.
2. **Durable Construction** Made with **zinc alloy** and reinforced components, this deadbolt is built to last for years with minimal wear. The double-cylinder mechanism ensures smooth operation even with frequent use.
3. **Weather Resistance** The **stainless steel** interior components prevent rust and corrosion, making it suitable for both indoor and outdoor use (e.g., garage doors, exterior doors).
4. **Easy Installation** Kwikset deadbolts are designed for straightforward installation, often requiring only a drill and basic tools. The included hardware (anchor bolts, screws) simplifies the process for most DIYers.
5. **Compatibility with Kwikset Systems** If you already have Kwikset locks or smart home devices (like Kevo or SmartKey), this deadbolt integrates well with their ecosystem, allowing for future upgrades.
6. **Aesthetic Options** Available in multiple **finishes** (brushed nickel, oil-rubbed bronze, satin nickel, etc.), it can match various door styles and interior/exterior designs.
7. **No Key Inside Requirement** Unlike single-cylinder deadbolts, this **double-cylinder** model requires a key on both sides, reducing the risk of accidental unlocking from the inside (e.g., in case of a fire).
8. **Good Warranty** Kwikset offers a **limited lifetime warranty** on mechanical failures, providing long-term peace of mind.
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#### **Cons:**1. **Double-Cylinder Limitations**
- **Fire Safety Concern**: Some building codes (e.g., in fire-prone areas) prohibit double-cylinder deadbolts on exterior doors because they can trap occupants inside during an emergency. Check local regulations before installing.
- **Inconvenience**: Requires a key to exit quickly, which may be annoying for some users.
2. **Key Dependency** Unlike smart locks, this deadbolt **cannot be unlocked without a key**, which may be inconvenient if you lose it or forget it inside.
3. **Potential for Misalignment** If installed improperly, the deadbolt may stick or fail to latch correctly. Precision drilling for the strike plate is crucial.
4. **Higher Cost Than Basic Models** While still reasonably priced for a Grade 1 deadbolt, it is more expensive than lower-grade options (e.g., Grade 2 or 3).
5. **No Smart Features** Unlike smart deadbolts (e.g., Kwikset Kevo), this model does not offer keyless entry, remote unlocking, or integration with smart home systems.
6. **Key Wear Over Time** Cheap or worn keys can cause the deadbolt to jam or fail to turn smoothly, requiring key replacement.
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### **Conclusion**
The **Kwikset 91590-019 double-cylinder deadbolt** is an excellent choice for homeowners prioritizing **security, durability, and ease of installation**. Its **Grade 1 rating** makes it one of the most secure residential deadbolts available, while its weather-resistant and long-lasting construction ensures reliability. However, the **double-cylinder design introduces practical limitations**, particularly regarding fire safety and convenience. If you can accommodate these trade-offs (e.g., keeping a key inside during emergencies), this deadbolt is a strong recommendation.
For those who want **smart features or keyless entry**, a different model (e.g., Kwikset Kevo or SmartKey) would be a better fit. But for **pure security and mechanical reliability**, the 91590-019 is a top-tier option.
### **Final Recommendation:** **Buy this deadbolt if:**- You need **maximum security** for an exterior door (e.g., garage, basement, or high-risk entry).
- You re comfortable with **double-cylinder convenience trade-offs** (key dependency, fire safety checks).
- You prefer a **mechanical, non-smart** solution that is easy to install and maintain.
**Avoid this deadbolt if:**- You live in an area with **strict fire safety codes** that prohibit double-cylinder locks.
- You want **smart features** (keyless entry, remote access).
- You frequently forget keys or need quick egress without a key.
Kwikset 159 Series Double Cylinder Deadbolt Satin Nickel 91590-019 READ, This is New in an Open Box. Please See Photos.