Tension Spring Fixing Plate (each)

17" Upholstery Tension Spring Fixing Plate, 9 Hole

Replacement Spring Fixing Plates for Sofas and Chairs

The 17" Upholstery Tension Spring Fixing Plate is designed to provide attachment points for compatible hooked tension springs in traditional upholstered furniture.

Measuring approximately 432mm long and It has nine spring-fixing holes, this replacement side plate is particularly useful when restoring sofas and armchairs fitted with tension-spring suspension systems, including suitable Parker Knoll-style furniture.

If you are replacing a damaged spring plate or rebuilding an existing suspension system, correctly positioned fixing plates are essential for retaining the springs and maintaining the intended seating support.

Sold individually, allowing you to order the quantity needed for your furniture repair.

Features

• 17" overall length, approximately 432mm.
• Nine spring-fixing holes, provides multiple attachment positions for compatible springs.
• Replacement upholstery component, suitable for repairing worn or damaged spring mounting arrangements.
• Seat and back applications, for furniture using compatible hooked tension springs.
• Traditional furniture restoration, particularly relevant to suitable Parker Knoll-style construction.
• Sold individually, practical for single repairs and workshop orders.

Why Are Tension Spring Fixing Plates Important?

In upholstered furniture fitted with extension-style tension springs, the fixing plates provide the attachment points that allow the springs to be held under tension.

As someone sits down or leans against the upholstered back, the springs extend and recover, transferring forces through their hooks to the fixing plates and supporting furniture frame.

The plates therefore form an important part of the suspension system.

Over time, older fixing plates may develop worn or enlarged holes, corrosion, distortion or loose frame attachments.

A damaged plate can allow a spring to move out of position or disconnect, affecting support and potentially damaging neighbouring components.

Replacing worn fixing plates alongside damaged springs helps restore a secure, correctly arranged suspension system.

Replacement Fixing Plates for Parker Knoll Furniture

Many traditional Parker Knoll chairs and sofas use hooked tension springs in their seat or back construction.

These springs are commonly attached to metal plates positioned within the furniture frame.

When restoring this type of furniture, it's important to inspect both the springs and their fixing plates.

Replacing a broken spring while leaving a worn attachment plate in place may not resolve the underlying problem.

The 17" nine-hole fixing plate may be suitable for compatible Parker Knoll-style furniture, but dimensions and fixing arrangements can vary between models.

Always compare the replacement plate with the original before ordering.

Don't Forget Your Replacement Tension Springs

14 Gauge Plastic Covered Seat Tension Springs

The 14 Gauge Plastic Covered Seat Springs provide firmer support for compatible sofa and armchair seats.

The protective plastic sleeve helps reduce direct contact between the spring wire and surrounding upholstery materials.

Available in seven lengths from 34cm to 46cm and sold individually.

18 Gauge Back Tension Springs

The 18 Gauge Back Tension Springs are lighter and more flexible, making them suitable for compatible upholstered furniture backs.

Available in six lengths from 36cm to 46cm and sold individually.

Seat and back springs are not interchangeable simply because their lengths are similar. Always match the original gauge and fitting arrangement.

Checking Your Existing Spring Fixing Plates

Before purchasing replacement upholstery spring plates, we recommend checking:

1. Overall length, confirm that the existing plate measures approximately 17 inches.
2. Number of spring holes, check that nine attachment positions are required.
3. Hole spacing, compare the positions against the original plate.
4. Hole diameter, ensure the spring hooks will engage correctly.
5. Mounting arrangement, check how the original plate attaches to the frame.
6. Spring compatibility, confirm the correct hook style, spring gauge and installed tension.

The number of holes alone does not guarantee compatibility.

If you're restoring an older armchair or sofa, retaining an undamaged original plate as a reference is particularly helpful.

Installation and Furniture Restoration

Tension spring fixing plates must be secured to a sound furniture frame before the springs are placed under tension.

During restoration, inspect the surrounding timber for splits, loose fixings or evidence of previous repairs.

Where a plate is damaged, carefully remove it and compare the replacement with the original arrangement.

Use suitable frame fixings and ensure the replacement is securely positioned before attaching the springs.

Hooked tension springs store energy when stretched, so appropriate tools, eye protection and care are essential during installation and removal.

For best results, preserve the original spring spacing and arrangement wherever possible.

17" Upholstery Tension Spring Fixing Plate provides secure attachment points for tension springs in traditional sofas and armchairs, including compatible Parker Knoll-style furniture.

• 17" (432mm) length with nine spring-fixing holes.
• Secure spring positioning, helps maintain the original suspension arrangement.
• Use it for repairs, replace worn, damaged or distorted fixing plates.
• Suitable for compatible sprung sofa seats and chair backs.
• Sold individually, order the quantity required.

Replacing the springs too? Complete your repair with the 14 Gauge Plastic Covered Seat Springs or 18 Gauge Back Tension Springs.