Designer Levers Frankfurt Linear Mortice Door Knob - Black

Name: Designer Levers Frankfurt Linear Mortice Door Knob - Black
Brand: Designer Levers
SKU: djtrqocpcf
Availability: InStock

A high-quality mortice door knob with an Art Deco vibe, suitable for use with internal doors. The ...

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Black Bronze Brown Gold Grey Silver White

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Product Information

Full details

This guide is for homeowners and designers seeking stylish, durable hardware for interior doors. The Designer Levers Frankfurt Linear Mortice Door Knob in Black offers an Art Deco-inspired aesthetic with improved grip and a bold, contemporary finish. A key benefit is its robust construction and 10-year mechanical guarantee, ensuring longevity. However, please note that latches are sold separately, requiring an additional purchase for full functionality.

All features

Colour	Black
Model Part Number	Frankfurt Linear Mortice
Brand	Designer Levers

Extended Product Information

FAQs

What type of door is this knob suitable for?

This mortice door knob is designed for interior doors only. It is not suitable for exterior doors or high-security applications.

Do I need to buy a separate latch mechanism?

Yes, this product is a door knob set and does not include the mortice latch. You will need to purchase a compatible mortice latch separately to complete the installation.

How do I clean the matt black finish?

To maintain the finish, simply wipe clean with a soft, damp cloth. Avoid abrasive cleaners or harsh chemicals, as they can damage the surface.

What is the warranty period for this door knob?

The Designer Levers Frankfurt Linear Mortice Door Knob comes with a 10-year mechanical guarantee, covering defects in materials and workmanship.

What are the dimensions of the rose and projection?

The rose diameter is 63mm, and the projection from the door surface is 69mm.

Can I use this on a fire door?

While the knob itself is durable, compatibility with fire doors depends on the specific fire door rating and the required fire-rated latch. Please consult with your door manufacturer or a building professional to ensure compliance.

Is the spindle length adjustable or standard?

The knob is supplied with a standard spindle. If your door thickness requires a different length, you may need to source a compatible spindle separately.

Troubleshooting

Knob is loose or wobbly.

Check that the fixing screws securing the knob to the spindle are tightened correctly. Ensure the spindle is properly seated within the knob mechanism.

Knob is difficult to turn.

Verify that the mortice latch is installed correctly and operating smoothly. Ensure there is no obstruction or misalignment between the knob, spindle, and latch mechanism. Check that the screws are not overtightened, which can bind the spindle.

Finish appears damaged or discolored.

Cease using any cleaning agents. Gently clean the affected area with a soft, damp cloth. If the damage is significant, it may require replacement, but check the warranty terms.

Knob does not engage the latch properly.

Ensure the spindle is correctly aligned with the latch mechanism and has sufficient travel. Confirm the latch itself is functioning as intended and is the correct type for the knob set.

Pros and Cons

Pros

Striking Art Deco design adds a unique aesthetic to interior doors.
Matt black finish is contemporary, versatile, and hides fingerprints well.
Linear edging provides enhanced grip and usability.
Robust construction ensures long-lasting durability and smooth operation.
Easy to install with included hardware.
Backed by a 10-year mechanical guarantee for peace of mind.

Cons

Mortice knobs require a mortice latch, which is sold separately.
May not be suitable for very heavy or high-traffic exterior doors.
The matt black finish, while durable, could show scuffs if subjected to significant abrasion.
Requires precise installation into the door edge for proper function.

Setup, Compatibility & Care

Setup:

The Frankfurt Linear Mortice Door Knob is supplied as a complete pair with a spindle and necessary fixing screws for straightforward installation. It is designed to be fitted into a mortice preparation within the door.

Ensure you have the correct mortice latch (sold separately) that matches your door's requirements.
Follow the instructions provided with the latch for its installation into the door edge.
Pass the spindle through the prepared hole in the latch.
Attach the knob to the spindle on one side, ensuring it sits flush against the rose.
Repeat for the other knob on the opposite side of the door.
Secure the knobs using the provided screws, ensuring they are firmly attached to the spindle.

Compatibility:

Suitable for interior doors only.
Requires a mortice latch (not included).
Designed for use with doors that can accommodate a standard mortice lock preparation.

Care:

Wipe clean with a soft, slightly damp cloth.
Avoid using abrasive cleaners, solvents, or harsh chemicals, as these can damage the matt black finish.
For stubborn marks, use a mild soap and water solution, then dry thoroughly with a clean, soft cloth.