Octagonal Mortice/Rim Knob Set – Black

Octagonal Mortice/Rim Door Knob Set – Black – Large – Anvil 33065

Bold, Hand-Forged Ironmongery for Period Doors

This Black Octagonal Door Knob Set from From The Anvil is a striking choice for those seeking bold, architectural hardware. As a scaled-up version of their original design, this knob brings grandeur and presence to any door, whether you’re restoring a period property or enhancing a traditional space.

Each knob is expertly hand-forged from mild steel, then finished with a durable black powder coat. During the final stage of manufacturing, the knob is baked at a high temperature, which enhances its corrosion resistance and ensures long-lasting durability. As a result, this finish performs well in kitchens, bathrooms, and even sheltered exterior doors where moisture is present.

Unlike mass-produced knobs, this set includes loose backplates, offering flexibility for mortice and rim lock installation. The included threaded spindle adjusts to suit different door thicknesses, while a grub screw locks it securely in place. For a comfortable grip, we recommend positioning the knob at least 3″ from the edge of the door, helping to avoid contact with the frame when opening.

Key Features:

• Larger version of the classic octagonal design for added impact
• Forged from solid mild steel with a resilient black powder-coated finish
• Supplied with two escutcheons, fixing screws, and an adjustable threaded spindle
• Suitable for both mortice and rim locks
• Unsprung mechanism for traditional functionality
• Ideal for heritage renovations, cottages, and classic interiors
• Works best when installed 3″ from the door’s edge to protect your knuckles

Technical Specifications:

• Knob Diameter: 70mm
• Projection: 78mm
• Rose Diameter: 87mm
• Spindle Size: 8mm (threaded)

Octagonal Mortice/Rim Knob Set – Black Finish & Maintenance:

The black powder-coated finish has a soft sheen and looks exceptional against timber, stone, or neutral paint tones. Moreover, its baked-on coating resists corrosion in damp environments, making it a great low-maintenance option. However, avoid using this product in coastal areas where salt exposure may lead to rust—marine-grade finishes are better suited in those cases.