
( Brand: Assa Abloy ), ( Manufacturer Part Number: 4820984-B-003 ), ( Model: 5322R ), ( Type: Mortise Lock ), ( Material: Stainless Steel ), ( Color: Silver ), ( Suitable For: Door Fitting ), ( Finish: Satin ), ( Style: Contemporary ), ( Country Of Origin: Sweden )
The **Assa Abloy 4820984-B-003 5322R Mortise Lock** is a premium, high-security door fitting designed for both residential and commercial applications where durability, reliability, and advanced security are paramount. Engineered with precision by Assa Abloy, a globally recognized leader in access solutions, this mortise lock combines cutting-edge technology with robust construction to deliver unmatched protection against unauthorized entry. The **5322R** series is specifically crafted for steel doors, ensuring seamless integration with heavy-duty frames while maintaining smooth operation even under frequent use. Its **mortise design** allows for a flush, sleek installation, eliminating the need for bulky strike plates or external handles, which enhances both aesthetics and security by reducing potential weak points. Constructed from high-grade steel, the lock body is resistant to tampering, drilling, and picking, making it an ideal choice for high-security environments such as offices, apartments, or commercial buildings where security is a top priority.
This mortise lock features a **mechanical cylinder** that can be paired with a variety of key profiles, including high-security keys that offer resistance to bumping, impressioning, and lock picking. The **5322R model** is particularly noted for its compatibility with **Assa Abloy s 5300 series cylinders**, which are engineered to meet stringent security standards, including those set by the European Standard EN 1303 for lock resistance. The lock s **dual-latch mechanism** ensures a secure latch position, while the **adjustable strike plate** allows for precise alignment with the door frame, preventing misalignment issues that could compromise security or functionality. Additionally, the **smooth-operating lever handle** provides a premium user experience, with a tactile feedback mechanism that ensures a firm, secure closure with every turn.
For added convenience, the **5322R** can be integrated with electronic access control systems, offering flexibility for keycard or biometric access solutions without sacrificing the lock s mechanical integrity. The **steel door fitting** is designed to withstand extreme environmental conditions, including humidity and temperature fluctuations, ensuring long-term reliability. Whether installed in a residential home, a corporate office, or a public facility, this mortise lock delivers a perfect balance of security, functionality, and aesthetic appeal, making it a trusted choice for professionals who demand nothing less than excellence in door security.
### **Assa Abloy 4820984-B-003 5322R Mortise Lock (Steel Door Fitting) Pros and Cons**
#### **Pros:**1. **High Security** This is a commercial-grade lock designed for high-security applications, featuring a robust mechanical core and advanced anti-pick and anti-drill mechanisms. It complies with **EN 12209** (resistance to picking, drilling, and impact) and **EN 1303** (resistance to forced entry), making it suitable for doors requiring strong protection against unauthorized access.
2. **Durability** Constructed from high-quality steel, this lock is built to withstand frequent use without wear or deformation. The mortise design ensures stability, even in heavy-duty doors.
3. **Compatibility with Access Control Systems** The **5322R** model is compatible with **Assa Abloy s electronic access control systems**, such as **SALTO KS, SALTO XS, or other RFID/electronic key systems**, allowing for keyless entry, audit trails, and remote management.
4. **Low Maintenance** Unlike electronic locks with moving parts, this mechanical lock with electronic integration has minimal wear, reducing the need for frequent servicing.
5. **Aesthetic and Functional Flexibility** Available in various finishes (e.g., chrome, brushed steel, black), it can be tailored to match different door designs. The mortise installation allows for a clean, flush appearance.
6. **Key Control** Assa Abloy provides **key control services**, meaning you can manage key duplication and distribution through authorized channels, reducing the risk of lost or unauthorized keys.
7. **Warranty and Support** Assa Abloy offers **extended warranties** and strong after-sales support, ensuring reliability in commercial and institutional settings.
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#### **Cons:**1. **High Initial Cost** Compared to standard residential locks, this is a **commercial-grade product**, making it more expensive upfront. Installation may also require professional fitting, adding to costs.
2. **Complex Installation** Mortise locks require **pre-drilling and precise fitting** into the door frame, which may not be suitable for DIY installation. Professional labor is often necessary, especially for thick or reinforced doors.
3. **Limited Keyway Compatibility** If you already have a large number of existing locks, this may not be compatible with your current key system unless you transition to Assa Abloy s key control.
4. **Electronic Dependency (If Used with Access Control)** While the lock itself is mechanical, integrating it with an electronic system means reliance on **batteries, power sources, or network connectivity**, which could fail and require maintenance.
5. **Weight and Door Thickness Considerations** Mortise locks work best with **standard door thicknesses (typically 40-60mm)**. Very thick or lightweight doors may require additional reinforcement or a different lock type.
6. **Key Loss Risks** Like all mechanical locks, lost or stolen keys can compromise security unless managed through Assa Abloy s key control system.
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### **Conclusion**
The **Assa Abloy 4820984-B-003 5322R mortise lock** is an **excellent choice for high-security environments** such as offices, government buildings, schools, or commercial properties where **durability, key control, and electronic access integration** are priorities. Its **EN-certified security, low maintenance, and compatibility with advanced access systems** make it a strong investment for long-term protection.
However, the **higher cost, complex installation, and potential electronic dependencies** may not justify its use in **residential settings or low-security applications**. If budget or installation constraints are a concern, alternatives like **high-security cylinder locks or smart locks with similar features** might be worth considering.
### **Recommendation**
- **Use this lock if:**- You need **commercial-grade security** for doors that require **EN-certified protection**.
- You want **electronic access control integration** (e.g., RFID, keypad, or networked systems).
- Your application involves **high-traffic areas** where durability and key management are critical.
- You are willing to **invest in professional installation** and maintenance.
- **Consider alternatives if:**- You are on a **tight budget** and need a balance between security and cost.
- Your doors have **unusual thickness or material** that complicates mortise installation.
- You prefer **fully electronic locks** without mechanical backup (though this reduces redundancy).
For most **commercial, institutional, or high-security residential applications**, this lock is a **reliable and future-proof choice**. Always consult a **locksmith or security specialist** to ensure proper installation and system compatibility.
Suitable For: Door fitting. Material and finish: Stainless steel construction; satin finish; color Silver. Country of origin: Made in Sweden. Model / MPN and label markings: ASSA ABLOY 5322R; 4820984-B-003; includes 4820984-B-003, Lock Case complete 5322 R, 2609 2010 10, a bar code; inventory sticker marked 263-95.
Brand: ASSA ABLOY. Item: Mortise lock case for door fitting. Type and style: Mortise Lock Case; Contemporary style; face plate with multi-latch configuration.