{"product_id":"sp4-p","title":"Double Cone Springs","description":"\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eA coil spring with a cone both top and bottom. In seats these are traditionally sewn and tied over Herringbone (Black \u0026amp; White) webbing. Do not forget that new springs will be very strong in comparison to those you have removed. It may be necessary to replace with a size smaller to be kind to an old frame. Also think carefully if replacing only\u003cb\u003e some\u003c\/b\u003e springs in a seat, it may be better to replace the whole set. The higher the gauge number the thinner the wire.\u003cbr\u003e\nExample \u003cbr\u003e\n\u003c\/p\u003e\u003cli\u003e12 gauge for backs only.\u003cbr\u003e\n\u003c\/li\u003e\u003cli\u003e10 gauge for seats and firmer backs.\u003cbr\u003e\n\u003c\/li\u003e\u003cli\u003e9 gauge or lower for seats only.\u003cbr\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003ctable class=\"product-specs\" style=\"width:100%;border-collapse:collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSprings \u0026amp; Suspension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupplier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUpholstery Warehouse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrade and domestic upholstery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDespatch\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFast UK despatch from stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdl class=\"product-faq\"\u003e\n\u003cdt\u003eWhat is Double Cone Springs used for?\u003c\/dt\u003e\n\u003cdd\u003eDouble Cone Springs is used in the suspension system of upholstered seating to provide bounce, support, and comfort. Coil springs are used in traditional upholstery; tension springs in modern suspension systems.\u003c\/dd\u003e\n\u003cdt\u003eWhat height and gauge of coil spring do I need?\u003c\/dt\u003e\n\u003cdd\u003eSpring height is selected based on the depth of the seat frame — typically 15-23cm (6-9 inch) springs for seat cushions. Gauge (wire thickness) determines firmness — 9 SWG is standard for seats; heavier gauges for firmer applications. The specification is in the product title.\u003c\/dd\u003e\n\u003cdt\u003eWhat is the difference between coil springs and tension springs?\u003c\/dt\u003e\n\u003cdd\u003eCoil (barrel) springs are used in traditional and high-end upholstery, tied in a grid pattern over webbing for deep, bouncy support. Tension (sinuous\/no-sag) springs are used in modern furniture, running front-to-back in a serpentine shape for a firmer, lower-profile seat.\u003c\/dd\u003e\n\u003cdt\u003eHow are upholstery coil springs tied?\u003c\/dt\u003e\n\u003cdd\u003eTraditional coil springs are tied using laid cord in a figure-8 knot pattern, connecting each spring to its neighbours and the frame. Springs are lashed in both directions (front-to-back and side-to-side) to prevent tilting.\u003c\/dd\u003e\n\u003cdt\u003eWhy choose Upholstery Warehouse for springs and suspension?\u003c\/dt\u003e\n\u003cdd\u003eUpholstery Warehouse stocks a comprehensive range of upholstery springs and suspension components used by professional upholsterers across the UK, at trade prices with fast despatch.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003c\/li\u003e","brand":"Upholstery Warehouse","offers":[{"title":"3in","offer_id":57210361119060,"sku":"SP4-3","price":1.52,"currency_code":"GBP","in_stock":true},{"title":"4in","offer_id":57210361151828,"sku":"SP4","price":2.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1072\/6552\/4052\/files\/double-cone-spring.jpg?v=1789828490","url":"https:\/\/upholsterywarehouse.co.uk\/products\/sp4-p","provider":"Upholstery Warehouse","version":"1.0","type":"link"}