The 62.5mm Mushroom Mortice Knob is a staple of traditional architectural ironmongery, favored for its smooth, organic silhouette and substantial hand-feel. The “Mushroom” designation refers to its classic profile—a gently domed top with a rounded underside that tapers elegantly into a slender neck.
What sets this specific model apart is the 62.5mm oversized rose. While standard modern door knobs typically sit on a 50mm or 52mm base, the 62.5mm diameter is a specialized “renovator’s choice.” 62.5mm Mushroom Mortice Knob provides a grander, more imposing appearance on the door and serves as the ultimate practical solution for covering up “scars” from previous hardware installations.
Technical Specifications of 62.5mm Mushroom Mortice Knob
These 62.5mm Mushroom Mortice Knob are engineered for a weighted, high-quality feel, ensuring they provide a satisfying mechanical “clunk” rather than the “tinny” sound of hollow, mass-produced alternatives.
| Feature | Detailed Specification |
| Knob Shape | Classic Mushroom (Ergonomic Domed Top) |
| Rose Diameter | 62.5mm (Oversized for maximum coverage) |
| Material | Solid Forged Brass or High-Density Zinc Alloy |
| Projection | 55mm – 65mm (Distance from the door face) |
| Springing | Unsprung (Requires a heavy-duty latch) |
| Fixing Method | Traditional Face-Fix (Visible color-matched wood screws) |
| Spindle | 8mm Steel Split Spindle (Included) |
| Available Finishes | Polished Brass, Satin Nickel, Antique Copper, Matte Black |
Design & Practical Advantages
-
The “Problem Solver” Rose: During a renovation, removing old door handles often reveals unsightly paint lines, deep indentations, or multiple old screw holes from decades of different hardware styles. The 62.5mm rose provides an extra 10–12mm of coverage compared to standard knobs, hiding these imperfections entirely and eliminating the need for tedious wood filling and repainting.
-
Timeless Ergonomics: The mushroom shape is widely considered one of the most comfortable designs for the human hand. The smooth, curved underside allows the fingers to wrap around the neck securely, providing an excellent grip and effortless turning action, even on heavy, solid-core doors.
-
Versatile Aesthetic: The clean, circular lines of the 62.5mm Mushroom Mortice Knob are culturally “neutral,” making them equally at home in a Victorian cottage, a 1930s semi-detached, or a modern farmhouse setting. It bridges the gap between traditional heritage and contemporary minimalism.
-
Solid-Core Weight: Typically manufactured from solid metal rather than thin pressed steel, these 62.5mm Mushroom Mortice Knob carry a significant weight. This density ensures they won’t dent, rattle, or loosen over time, providing a sense of permanence and quality to your interior doors.
Primary Applications
-
Heritage & Period Renovations: Specifically designed for upgrading hardware in older properties where the doors have undergone multiple hardware changes over the years.
-
Solid Timber Doors: The bold proportions of the 62.5mm rose look perfectly balanced on thick, 44mm solid oak, walnut, or pine doors.
-
High-Traffic Living Areas: A durable and reliable choice for lounges, kitchens, and hallways where the hardware is subjected to heavy daily use.
-
Aesthetic Uniformity: When used throughout a property, these knobs create a cohesive, “architect-designed” look that ties varied room styles together under a single high-quality theme.
Professional Installation Tip: Backset & Latching
Because the 62.5mm rose is wider than average, correct placement on the door stile is critical to avoid “knuckle-clash” with the door frame.
-
The 3-Inch Latch Rule: To prevent your fingers from hitting the door frame when turning the knob, we strongly recommend using a 75mm (3-inch) mortice latch. This places the center of the 62.5mm Mushroom Mortice Knob further away from the door edge, accommodating the wider rose and providing ample clearance for your hand.
-
Heavy-Duty Requirement: This 62.5mm Mushroom Mortice Knob is unsprung. A standard, budget-grade latch will not have a strong enough internal spring to return the heavy mushroom knob to its original position. Always pair this hardware with an Architectural or Heavy-Duty Latch.
-
Pilot Holes: Since the 62.5mm rose is large, the screw holes sit further out from the center than usual. Always drill pilot holes to ensure the screws go in perfectly straight and don’t split the door timber near the edge of the stile.
-
Maintenance: To keep the finish looking its best—especially in Satin Nickel or Antique Brass—avoid harsh chemical cleaners. A simple wipe with a soft, dry microfiber cloth every few months is all that’s needed to maintain the metallic luster.
Enhance your doors with this elegant 62.5mm Mushroom Mortice Knob, designed for furniture and interior doors with a comfortable 62.5mm grip. Featuring a matching rose plate, this 62.5mm Mushroom Mortice Knob provides a secure and polished finish, combining classic style with practical functionality. Crafted from durable materials, it ensures long-lasting performance, making it suitable for both residential and commercial interiors. The rounded mushroom design offers a comfortable hold while adding a subtle decorative touch to your doors.
Easy to install and compatible with standard mortice locks and latches, this 62.5mm Mushroom Mortice Knob delivers smooth operation and reliable performance. Its robust construction resists daily wear while maintaining an attractive finish, making it ideal for bedrooms, living areas, and office doors. Combining durability, comfort, and timeless design, the 62.5mm Mushroom Mortice Knob with rose plate is a versatile and dependable addition to any interior, offering both aesthetic appeal and functional reliability.




























William (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.
Jack (verified owner) –
Kept fully updated about delivery date and time. Drop down hanging rails arrived on time, in perfect condition.
Jack (verified owner) –
Easy to order from a wide range of products suitable for all budgets and purposes.
Harry (verified owner) –
Easy to order from a wide range of products suitable for all budgets and purposes.
Oliver (verified owner) –
Also received a friendly follow up call from Rob, to ensure all the products had arrived and check I’m happy with everything.