The Glass Ball Mortice Knob is a timeless architectural centerpiece that bridges the gap between Victorian elegance and contemporary minimalism. Featuring a precision-cut clear glass sphere mounted on a high-quality metal rose, this hardware is designed for use with mortice internal door locks and latches.
Unlike standard lever handles, the Glass Ball Mortice Knob provides a tactile, weighted experience, acting as a “light-catcher” that enhances the natural illumination of hallways and rooms. Engineered with a sprung or unsprung mechanism, these knobs are as functionally durable as they are visually striking.
The Glass Ball Mortice Knob is more than a functional tool; it is a design element that changes the character of a room based on the lighting conditions.
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High-Clarity Optical Glass: Each Glass Ball Mortice Knob is crafted from heavy-duty, lead-free glass that has been flame-polished to remove internal inclusions. This ensures a “crystal-clear” look that won’t cloud or yellow over time, even when exposed to direct sunlight.
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Ergonomic “Palm-Fit” Design: The spherical shape is engineered for a comfortable grip. Measuring typically 50mm to 60mm in diameter, it provides ample leverage for operating heavy internal doors while remaining compact enough for a delicate aesthetic.
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Versatile Metal Rose Bases: The glass sphere is permanently bonded to a metal rose, available in finishes such as Polished Chrome, Satin Nickel, or Antique Brass. This allow you to match the knob to existing hinges and switch plates throughout the property.
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Secure Grub-Screw Fixing: To prevent the knob from “spinning” on the spindle—a common issue with inferior hardware—these knobs feature a high-torque grub screw that bites into the spindle, ensuring a permanent, wobble-free connection.
Technical Specifications of Glass Ball Mortice Knob
| Feature | Detailed Specification |
| Knob Diameter | 50mm – 55mm (Standard) |
| Projection | 75mm – 85mm from door face |
| Rose Diameter | 55mm – 65mm (Concealed or Visible Fixings) |
| Spindle Size | 8mm x 8mm (Universal Standard) |
| Material | Toughened Glass + Solid Brass or Zinc Alloy Rose |
| Mechanism | Available in Sprung or Unsprung versions |
| Suitability | Internal Doors (35mm – 44mm thickness) |
Recommended Hardware Pairings
To ensure your Glass Ball Mortice Knob operate with a “premium feel,” they should be paired with the correct internal mechanisms:
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Heavy-Duty Mortice Latch: If the knob is unsprung (meaning it doesn’t have its own internal spring), you must use a “heavy-sprung” mortice latch. This ensures the knob returns to the horizontal position and doesn’t feel “loose.”
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Matching Bathroom Turn: For privacy doors, pair the Glass Ball Mortice Knob with a matching metal thumbturn in the same finish as the knob’s rose.
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Butt Hinges: To complete the look, use 3-inch or 4-inch ball-bearing hinges in a matching finish (e.g., Polished Chrome) for smooth, silent door operation.
Installation Pro-Tip: The “Backset” Calculation
Because a spherical knob has a larger projection than a flat lever, your hand needs clearance from the door frame to avoid “knuckle-clash.”
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Avoid 64mm (2.5″) Latches: These are often too shallow for knobs, placing the glass too close to the frame.
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Use 76mm (3″) or 100mm (4″) Latches: A longer backset moves the knob further into the door leaf, providing plenty of room for your hand to turn the glass ball without hitting the door stop.
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Spindle Alignment: Ensure the spindle is cut to a length where it engages at least 15mm into each knob. If it is too short, the grub screw will not be able to grip the metal, leading to the knob falling off over time.
Add a touch of timeless elegance to your doors with this facetted glass ball mortice knob, crafted with a 55mm diameter for a comfortable and stylish grip. The crystal-effect facetted design catches the light beautifully, creating a sparkling finish that enhances both traditional and contemporary interiors. Mounted on a sturdy base, this door knob combines delicate detailing with reliable durability, making it a practical and decorative choice for your home or workplace. Perfect for replacing old fittings or upgrading existing doors, it delivers both visual appeal and dependable performance.
Designed for mortice locks and latches, this knob offers smooth operation while providing a striking focal point for any room. Its classic glass ball shape with a facetted finish suits a variety of décors, from period properties to modern spaces aiming for a luxurious touch. Installation is straightforward, making it suitable for both DIY users and professional fitters. Whether fitted to bedroom, living room, or office doors, this high-quality knob blends strength with sophistication. A cost-effective way to upgrade door hardware, this facetted glass knob brings style, shine, and durability to everyday use.





























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George (verified owner) –
Great company. Really nice clear website. Products price and better quality than amazon. They even have full technical dimensional CAD drawings for all products so you know exactly what you are getting! Just great will return again.
Harry (verified owner) –
Easy to order from a wide range of products suitable for all budgets and purposes.
Jack (verified owner) –
Easy to order from a wide range of products suitable for all budgets and purposes.
Jack (verified owner) –
Easy to order from a wide range of products suitable for all budgets and purposes.