Oval knob locking door Espagnolette / Cremone bolt upto 8.5′-BLACK

Black Oval Knob Locking Espagnolette Cremone Bolt – Up to 8.5ft (2.6m)

The Black Oval Knob Locking Espagnolette Cremone Bolt up to 8.5ft is a premium locking solution designed for UK homes, commercial properties, and heritage projects where elegance, strength, and security are essential. Combining traditional craftsmanship with modern functionality, this cremone bolt is ideal for French doors, casement windows, and tall timber doors.

Manufactured using a combination of solid brass, steel, and cast iron, this locking cremone bolt offers exceptional durability and long-term performance. Its striking black finish adds a royal, vintage aesthetic, making it perfectly suited to period properties, listed buildings, and contemporary interiors seeking a classic touch. Designed to suit doors up to 8.5ft (2.6m) in height, it provides full-height locking that enhances security, improves door stability, and helps reduce draughts.

Product Features

• Finish:
  High-quality black finish delivering a bold, vintage appearance with excellent resistance to wear

• Locking Mechanism:
  Euro cylinder locking system allowing the door or window to be secured at head and foot in one smooth movement

• Materials:
  Crafted from solid brass, steel, and cast iron for strength, reliability, and longevity

• Dimensions:

  • Knob size: 64 x 39 mm

  • Knob projection (including lock box): 77 mm

  • Lock box: 90 x 40 x 20 mm

  • Backplate: 90 x 40 mm

  • Backplate projection: 67 mm

• Length Range:
  Suitable for doors up to 8.5ft (2.6m) in height

  • Upper bolt: 48” / 4ft (1220mm)

  • Lower bolt: 48” / 4ft (1220mm)
    Both rods can be cut down to suit door height and preferred knob position

• Application:
  Suitable for doors and internally opening windows, including French doors and French windows

Where This Is Used

This black oval knob locking cremone bolt is a versatile choice across a wide range of UK projects:

• Casement & French Windows
  Ideal for internally opening windows, allowing secure locking at the top and bottom of the frame

• French Doors & Tall Timber Doors
  Commonly mounted on the vertical frame of French doors, enabling both the head and foot of the door to be locked in a single action

• Traditional & Modern Interiors
  The bold black finish delivers a striking contrast in modern interiors while perfectly complementing period, vintage, and heritage designs

• Residential & Commercial Applications
  Suitable for private homes, apartments, boutique hotels, offices, cafés, and restoration projects

• Double Doors
  Looks particularly impressive when fitted as a pair on double doors, enhancing both symmetry and security

Being a full-height espagnolette system, this bolt also helps prevent door warping and improves sealing, reducing draughts over time.

Why Choose a Locking Cremone Bolt

Locking cremone bolts are a preferred choice for professionals due to their combination of security, functionality, and design appeal:

• Enhanced Security in One Movement
  The euro cylinder locking mechanism secures both the top and bottom of the door simultaneously

• Improved Door Stability
  Full-height rods distribute pressure evenly, helping to prevent twisting or warping of tall doors

• Reduced Draughts
  By holding the door firmly at multiple points, cremone bolts improve sealing and insulation

• Timeless Aesthetic
  Unlike modern multipoint locks, cremone bolts maintain a classic, elegant appearance

• Longevity & Durability
  Solid brass, steel rods, and cast iron components ensure long-lasting performance even in high-use environments

This makes the locking cremone bolt an excellent choice for UK heritage properties and high-end modern projects alike.

Installation & Compatibility

The Black Oval Knob Locking Espagnolette Cremone Bolt is designed for professional-quality installation:

• Frame Types:
  Suitable for timber doors and windows, including traditional joinery commonly used in the UK

• Fixing Information:
  Supplied complete with keeps, strikers, guides, and fixing screws, ensuring a complete installation package

• Rod Adjustment:
  Upper and lower rods can be cut to length, allowing precise positioning of the knob and lock body

• Professional Recommendation:
  While competent DIY installation is possible, professional installation is recommended, especially for tall or heavy doors, to ensure correct alignment and smooth operation

Correct installation maximises security, performance, and the visual impact of the hardware.

FAQs

Is this cremone bolt suitable for uPVC windows or doors?
This cremone bolt is primarily designed for timber doors and windows. Compatibility with uPVC should be confirmed with a professional installer.

Does it come with keys?
Yes. The bolt is supplied with a solid brass euro cylinder lock and 3 keys.

Is the black finish durable?
Yes. The black finish is designed for durability and long-term use, suitable for both residential and commercial environments.

Can this be used on tall doors?
Absolutely. It is suitable for doors up to 8.5ft (2.6m), with rods that can be cut down to size.

Does it help prevent door warping?
Yes. Being a full-height espagnolette system, it distributes pressure evenly along the door, helping to prevent warping and reduce draughts.

Is this suitable for UK standards?
Yes. This locking cremone bolt is designed to meet UK door and window requirements, making it ideal for both traditional and modern installations.