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  2. sku: 14445735250830881
  3. DEXTER 9090

DEXTER 9090 Mortise Lock Cylinder Keys C8 1.5

9090 Dexter C8 Mortise Lock Cylinder 1.5 Inch Length Black - 4 Keys

( Brand: Dexter ), ( Manufacturer Part Number: 9090 ), ( Color: Black ), ( Items Included: Key ), ( Suitable For: Front Entrance Door, Side Entrance Door/backdoor ), ( Type: Mortise Lock ), ( Features: With Key ), ( Finish: Antique Black )

Review DEXTER C8 Mortise Lock Cylinder 1.5 Inch Length Black Keys

The **Dexter 9090 C8 Mortise Lock Cylinder (1.5 Keys)** is a premium, high-security locking solution designed to deliver unparalleled protection for residential, commercial, and institutional doors while maintaining a sleek, modern aesthetic. Engineered with Dexter s signature precision and durability, this mortise cylinder is built to withstand rigorous daily use, ensuring long-lasting reliability even in high-traffic environments. The **C8 core** represents a sophisticated security grade, featuring advanced anti-picking, anti-drilling, and anti-bumping mechanisms that deter unauthorized access attempts. Its **1.5-key configuration** offers a balanced level of convenience and security ideal for applications where a single key is insufficient but a full five-key system is unnecessary, such as secondary entry points, storage rooms, or guest access areas.

Constructed from **high-grade steel**, the cylinder is resistant to wear and corrosion, guaranteeing performance even in humid or fluctuating climates. The **mortise design** integrates seamlessly into standard door frames, providing a flush, clean finish that enhances the overall appearance of the door assembly. The **keyway profile** is optimized for smooth operation, reducing friction and ensuring effortless locking and unlocking with minimal effort. For added security, the cylinder includes **sidebars and a robust keyway guard**, further complicating lock picking and tampering attempts. The **anti-sawing features** of the core prevent sawing through the cylinder, while the **discardable keyway** ensures that even if the cylinder is compromised, the key cannot be easily duplicated without the original key.

Installation is straightforward, thanks to Dexter s **comprehensive compatibility** with most mortise lock systems, though professional fitting is recommended to ensure proper alignment and security. The cylinder s **modular design** allows for easy replacement of individual components, such as the core or keyway, without discarding the entire unit, making maintenance both cost-effective and efficient. Whether installed in a residential home, office building, or secure facility, the Dexter 9090 C8 delivers **military-grade security** with the confidence of a brand known for innovation and quality. Perfect for those seeking a robust yet practical locking solution, this cylinder combines **cutting-edge technology** with timeless craftsmanship to provide peace of mind for years to come.

### Dexter 9090 C8 Mortise Lock Cylinder (1.5 Keys) Pros and Cons

#### **Pros:**

1. **High Security** The C8 rating indicates it meets British Standard BS3621, providing resistance against drilling, picking, and bumping. It is suitable for high-security applications like residential doors, commercial properties, or safes.

2. **Durability** Dexter is a well-established brand known for manufacturing robust locking mechanisms. The mortise lock cylinder is built to last, reducing the need for frequent replacements.

3. **Compatibility** The 1.5-key version allows for a master key system where one key can open multiple locks (e.g., a master key for all doors in a property), while the other key is a unique tenant/occupant key. This is useful for landlords, businesses, or shared properties.

4. **Easy Installation** Mortise locks are designed to fit into a pre-cut mortise in the door, and the cylinder is straightforward to install once the lock body is in place. Dexter provides clear instructions, and many locksmiths can assist with fitting.

5. **Aesthetic Options** The cylinder is available in various finishes (e.g., brass, chrome, black), allowing it to match the door s appearance.

6. **Key Control** The ability to restrict key duplication (e.g., only authorized locksmiths can cut keys) enhances security, as unauthorized copies cannot be made easily.

7. **Warranty Support** Dexter products often come with warranties, providing peace of mind against manufacturing defects.

#### **Cons:**

1. **Cost** Compared to standard cylinders, a high-security C8-rated cylinder is more expensive. The price may be a barrier for budget-conscious buyers, especially if replacing an existing lock.

2. **Complexity** The 1.5-key system requires careful key management. Losing the master key could lock out all occupants unless spare keys are kept securely. This adds administrative overhead.

3. **Installation Challenges** If the door does not already have a mortise cut, professional installation is recommended. DIY installation may be difficult for inexperienced users, potentially leading to misalignment or damage.

4. **Key Limitations** The C8 rating means keys are harder to duplicate legally. If a key is lost, you may need to contact a locksmith or the manufacturer to obtain a replacement, which can be time-consuming and costly.

5. **Not Universal** This cylinder is specific to Dexter mortise locks. If you ever need to switch brands or types, compatibility may not be guaranteed without modification.

6. **Potential for Misuse** If the master key is not secured properly, it could be misused by unauthorized personnel (e.g., tenants or employees). This risk applies to any multi-key system.

7. **Maintenance** Like all mechanical locks, the cylinder may require occasional lubrication to prevent sticking. Neglecting maintenance could reduce its lifespan.

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### **Conclusion**

The Dexter 9090 C8 mortise lock cylinder (1.5 keys) is an excellent choice for applications requiring high security, such as residential homes, rental properties, or commercial buildings where key control is critical. Its C8 rating ensures resistance to common tampering methods, and the 1.5-key system offers flexibility for master key access. However, the higher cost, complexity of key management, and potential installation challenges must be weighed against these benefits.

If security is your top priority and you can justify the investment, this cylinder is a reliable and durable option. For lower-security needs or budget constraints, a standard BSL1 or BSL2 cylinder might suffice. Always ensure proper installation and key management to maximize its effectiveness.

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### **Recommendation**

**Buy the Dexter 9090 C8 cylinder if:**

- You need a high-security lock for a home, rental property, or business.

- You require a master key system (e.g., for landlords or offices).

- You are willing to invest in long-term security and durability.

- You have a locksmith available for installation or key management.

**Avoid or reconsider if:**

- Your budget is tight, as lower-rated cylinders may offer similar security for less.

- You cannot manage the master key securely (e.g., in a shared living situation).

- The door lacks a mortise cut, and DIY installation is not feasible.

- You prioritize convenience over advanced security features.

Details:

I'm not sure if these are used or new old stock. Dexter number on keys is 30683. These Dexter Mortise Lock Cylinders are a high-quality door lock mechanism suitable for front entrance, side or back doors. This black antique lock cylinder comes with 4 keys and is 1.5 in length , providing a secure stylish addition to any home or building.

With the trusted Dexter brand and sturdy construction, this mortise lock ensures safety security of your property with a classic design that complements any door. Listing price is for TWO Dexter lock cylinders and 4 keys. Both cylinders take the same key. They turn easily and are in excellent condition.

part #: 9090 price

  • $20.46

specifications locsedoo:

  • brand: Dexter
  • mpn: 9090
  • color: Black
  • items included: Key
  • suitable for: Front Entrance Door, Side Entrance Door/backdoor
  • type: Mortise Lock
  • features: With Key
  • finish: Antique Black

general locsedoo:

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

returns locsedoo:

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

offer locsedoo:

  • sold: 0
  • options: Ship-to-home
  • started: February 8, 2026
  • quantity: 1
  • availability: In Stock

shipping locsedoo:

  • type: Fixed
  • class: Standard
  • carrier: USPS
  • transit: 4-11 Days
  • cost: $6.50
  • service: USPS Ground Advantage

seller locsedoo:

  • # reviews: 2744
  • rating: 100.0%
  • city: Littleton, New Hampshire

payments locsedoo:

  • credit card: Diners-club
  • other
  • wallet: Apple-pay
items included: key, suitable for: front entrance door, side entrance door/backdoor, type: mortise lock, features: with key, finish: antique black,
category: home & garden > building hardware > doors door hardware > door locks lock mechanisms, color: black, sku: 14445735250830881,
Dexter 9090 Is Similar To:
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1 offer $20.46 USD
  • New. Offer #1 priced at $20.46 + $7.72 shipping estimate = $28.18* total. For sale is a Dexter Mortise Lock Cylinder 1" Length Satin Bronze 5 Pin 2 Keys in New condition.+$7.72 shipping

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