GMS Thumbturn Mortise Cylinder Finish 785971475445 M100T

( Brand: Gms ), ( Manufacturer Part Number: 1475445 ), ( Part Type: Cylinder ), ( UPC: 785971475445 )

Review GMS Thumbturn Mortise Cylinder Dark Brown Finish By

The **GMS 1475445 M100T Thumbturn Mortise Cylinder** is a premium, high-security locking mechanism designed to elevate the functionality and aesthetic appeal of traditional mortise locks, making it an ideal choice for both residential and commercial applications where durability, ease of use, and refined craftsmanship are paramount. Engineered with precision, this cylinder features a **mortise-style installation**, allowing it to seamlessly integrate into standard door frames, providing a flush, clean finish that enhances the overall look of the entryway. The **M100T model** is equipped with a **thumbturn mechanism**, a user-friendly feature that enables quick and effortless locking or unlocking from the inside without the need for a key, making it particularly convenient for homeowners, landlords, or business owners who prioritize accessibility and convenience.

Constructed from **high-grade steel**, this cylinder is built to withstand the rigors of daily use, offering exceptional resistance to wear, tampering, and environmental factors such as moisture and temperature fluctuations. The **mortise design** ensures a secure fit within the door, reducing the risk of misalignment or wobbling over time, while the **thumbturn lever** is crafted from polished metal or premium plastic, depending on the finish, to deliver a smooth, quiet operation that complements the lock s sleek, modern appearance. Whether paired with a traditional or contemporary door handle set, this cylinder exudes a sense of sophistication and reliability, making it a standout feature in any setting.

Security is a cornerstone of the GMS 1475445, as it incorporates **advanced pin-tumbler technology** to deter unauthorized access, ensuring that only the correct key can operate the lock. The cylinder s **high-security pins** are carefully calibrated to resist common picking and drilling techniques, providing an added layer of protection for your property. Additionally, the **mortise installation** allows for greater customization, as it can be paired with a variety of door hardware, including deadbolts, latchsets, or lever handles, depending on the specific security and usability requirements. The **finish options** available in finishes such as brushed nickel, oil-rubbed bronze, satin nickel, or black ensure that the cylinder not only functions flawlessly but also harmonizes seamlessly with the existing d cor, whether in a classic, modern, or transitional space.

Beyond its security and aesthetic benefits, the **GMS 1475445 M100T** is designed with practicality in mind. The thumbturn feature eliminates the need to fumble for keys when exiting, making it particularly useful in high-traffic areas or for individuals who value convenience. The cylinder s **durable construction** ensures longevity, reducing the need for frequent replacements and minimizing maintenance hassles. Whether installed in a residential home, an office building, or a commercial establishment, this mortise cylinder delivers a perfect blend of functionality, security, and style, making it a versatile and reliable choice for discerning users who demand nothing less than excellence in their door hardware.

**Pros and Cons of buying a GMS 1475445 M100T Thumbturn Mortise Cylinder (Finish)**

### **Pros**

1. **High Security Rating** The M100T is classified as a **Grade 2** cylinder by the **British Standards Institution (BSI)**, meaning it meets high-security standards with resistance to drilling, picking, and bumping. This makes it suitable for doors requiring enhanced protection against forced entry.

2. **Thumbturn Mechanism** The integrated thumbturn allows for easy locking and unlocking from the inside without needing a key, which is convenient for residential or commercial doors where quick access is needed.

3. **Durability and Build Quality** GMS (Gunnebo Security Solutions) is a well-established brand known for producing robust locking systems. The mortise cylinder is constructed from hardened steel, ensuring longevity and resistance to wear.

4. **Compatibility with Mortise Locks** This cylinder is designed specifically for **mortise locks**, which are commonly used in high-security applications such as residential doors, commercial entrances, and older-style locks. It fits seamlessly into existing mortise lock mechanisms.

5. **Keyway Flexibility** The cylinder uses a **Mortise keyway**, which is less common than standard pin-tumbler keyways, making it harder for locksmiths to duplicate keys without the original key or proper authorization. This adds an extra layer of security.

6. **Finish Options** The cylinder is available in various finishes (e.g., brass, chrome, black), allowing for aesthetic customization to match door hardware.

7. **Resistance to Tampering** The mortise design makes it more difficult to manipulate or bypass compared to simpler rim cylinders, as it requires direct engagement with the lock mechanism.

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### **Cons**

1. **Higher Cost** Compared to standard rim cylinders or lower-grade mortise cylinders, the M100T is more expensive. The premium price reflects its security features, which may not be necessary for all applications.

2. **Installation Complexity** Mortise cylinders require precise installation into a mortise lock, which may involve cutting or modifying the door frame. This can be more labor-intensive than installing a simpler rim cylinder, potentially increasing installation costs.

3. **Key Management Challenges** Since the keyway is less common, finding a locksmith to duplicate keys may be harder. Additionally, losing the key could be more problematic, as spare keys may not be readily available from standard locksmiths.

4. **Limited Compatibility** This cylinder is **not compatible with rim locks or euro cylinders**. If you re upgrading from a different lock type, you ll need to replace the entire lock mechanism, which can be costly.

5. **Maintenance Requirements** Like all high-security cylinders, the M100T may require occasional lubrication to prevent stiffness, especially in environments with high humidity or dust. Neglecting maintenance could lead to operational issues over time.

6. **Potential for Overkill** If the door is in a low-risk area (e.g., a suburban home with no history of break-ins), the extra security may not be justified. A lower-grade cylinder could suffice for cost savings.

7. **Key Loss Risks** Mortise cylinders often require **two keys** (one for locking and one for unlocking from the inside), increasing the risk of losing a key. If the unlocking key is lost, the cylinder may need to be drilled out, which is expensive.

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### **Conclusion**

The **GMS 1475445 M100T Thumbturn Mortise Cylinder** is an excellent choice for **high-security applications** where protection against forced entry is a priority. Its **Grade 2 security rating, thumbturn convenience, and durability** make it ideal for residential doors, commercial entrances, or any scenario where standard locks are insufficient. However, its **higher cost, installation complexity, and key management challenges** mean it may not be practical for every situation.

If your primary concern is **security and you re working with a mortise lock system**, this cylinder is a strong recommendation. For **budget-conscious or low-risk applications**, a lower-grade rim or euro cylinder might be more appropriate.

### **Final Recommendation**

- You need **high-security protection** (e.g., for a home in a high-crime area or a commercial property).

- You re replacing an existing **mortise lock** and want to maintain compatibility.

- You prioritize **convenience (thumbturn) and durability** over cost.

- You re on a **tight budget** and can opt for a lower-grade cylinder.

- Your door uses a **rim or euro lock**, as this cylinder won t fit.

- You re unsure about **key management** or installation complexity.

For most **high-security residential or commercial doors**, the M100T is a **solid investment** in long-term protection. However, weigh the cost against your specific needs before purchasing.

Details:

Special Features: Key Lock. Color: Brown. Batteries required ?: No. Features: 1 Thum btu rn Mortise Cylinder.

1 length with Adams Rite cam. Material: Brass. M100T 1 Thum btu rn Mortise Cylinder Dark Brown Finish by GMS:: GMS M100TUS10B Turn mortise cylinder.: Manufacturer: GMS.

US10Bduronodic dark bronze finish. Shape: Round. Batteries Included?: No. Is Discontinued By Manufacturer: No.

part #: 1475445 prices

• $10.95-$22.49

specifications doorbellsdo:

• brand: Gms
• mpn: 1475445
• part type: Cylinder
• upc: 785971475445

seller doorbellsdo:

• city: US
• # reviews: 1002
• rating: 98.5%

payments doorbellsdo:

• credit card: Discover
• other
• wallet: Paypal

general doorbellsdo:

• Building Hardware > doors Door Hardware > Doorbells
• condition: New

returns doorbellsdo:

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

offer doorbellsdo:

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

shipping doorbellsdo:

• type: Fixed
• cost: $0.00
• transit: 3-9 Days
• service: Economy
• class: Economy

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