Seat Spring Units Archives

Upholstery Seat Spring Units

Pre-assembled Seat Spring Units for chairs and sofas. A time-saving alternative to hand-tying individual springs, offering strength, comfort, and durability.

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Mesh top Spring unit 22″ Deep
£46.07 – £115.63 Select options This product has multiple variants. The options may be chosen on the product page
Mesh Top Spring Units 25″ Deep
£57.60 – £145.42 Select options This product has multiple variants. The options may be chosen on the product page

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- What are Spring Units?
  
  Seat Spring Units are pre-assembled spring bases designed to save time in upholstery builds. Instead of installing and tying individual springs, these ready-made units deliver strength, comfort, and durability straight into your project. They’re widely used in both new furniture and reupholstery work, offering consistent performance and faster installation.
  
  Prefer to build from scratch? Explore our Double Cone Coil Springs for traditional hand-tied upholstery or Zigzag Springs for a modern continuous system.
  
  Why Choose Foam4U’s Spring Units? ✅
  - Pre-assembled design – saves time and labour.
  - Uniform support – evenly distributes weight across seating.
  - Strong steel construction – built to last.
  - Versatile use – ideal for sofas, chairs, benches, and custom builds.
  Applications 🛠️
  - Sofas & armchairs – fast installation for reliable seating support.
  - Dining chairs & benches – adds strength and durability.
  - Reupholstery projects – restore older furniture quickly.
  - Trade & manufacturing – consistent results for workshops and professionals.
  Complementary Products 🔗
  
  Pair your Spring Units with:
  - Spring End Formers & Clips – secure Zig-Zag springs in place.
  - Upholstery Tools & Equipment – spring stretchers, pliers, and hammers.
  - Upholstery Felts – protect fillings from spring wear.
  - Foam Cut to Size – cushioning layers above the spring unit.
  - Hair & Fibre Fillings – for a traditional build-up.
  Compare with Other Spring Types 🔍
  
  Not sure if spring units are right for you? Explore our full range:
  - Zigzag Springs – continuous, easy-fit serpentine springs.
  - Superloop Springs – flexible looped springs for backs.
  - Double Cone Springs – traditional 8-way hand-tied option.
  Explore Our Full Range 🌐
  
  Browse all Upholstery Springs, view the complete Springs & Webbing collection, or shop our full range of Upholstery Sundries for your next project.
  
  Technical Info 📏
  - Material: Hardened spring steel
  - Type: Pre-assembled spring unit
  - Use: Upholstery seating support
  FAQ ❓
  
  What are spring units used for?
  
  Spring units are ready-made spring bases for chairs and sofas. They save time compared with hand-tying individual springs.
  
  How do you install spring units?
  
  Secure the frame with Barbed Clout Nails , then cover with Upholstery Felts. Finish with Foam Cut to Size or Hair & Fibre Fillings for comfort.
  
  Spring units vs tension or zigzag springs — which is better?
  - Spring units – fast to fit, consistent, and efficient for trade use.
  - Tension Springs – traditional method for bespoke upholstery.
  - Zigzag Springs – flexible continuous system, common in modern builds.
  Do I need padding over spring units?
  
  Yes ✅ — always use Upholstery Felts before adding top layers like Foam Cut to Size or Hair & Fibre Fillings.
  
  Can spring units be cut or modified?
  
  Spring units are manufactured in set sizes. For custom builds, we recommend using Tension Springs or Double Cone Springs where more flexibility is needed.