{"product_id":"bts80-size-4-floor-spring","title":"BTS80 Size 4 Floor Spring","description":"\u003ch2 style=\"text-align: center;\"\u003e\u003cstrong\u003eProduct Information\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Dorma BTS80 Floor Springs are designed for durability and versatility, featuring a fixed strength size 4. These springs are suitable for both single and double action doors when paired with the appropriate accessory pack.\u003c\/p\u003e\n\u003cp\u003eCapable of supporting doors weighing up to 300kg and measuring a maximum width of 1100mm, these floor springs have been rigorously tested to meet BS EN1154 standards and are CE Marked for quality assurance.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\u003cstrong\u003eProduct Specification\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting:\u003c\/strong\u003e Concealed - Installed within the floor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards:\u003c\/strong\u003e Tested to BS EN1154.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eHeight: 60mm\u003c\/li\u003e\n\u003cli\u003eWidth: 78mm\u003c\/li\u003e\n\u003cli\u003eLength: 341mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Door Weight:\u003c\/strong\u003e 300kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Door Width:\u003c\/strong\u003e 1100mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrength:\u003c\/strong\u003e Fixed Size 4\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSpindle Options:\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eYes - BTS80EN4 - 15mm (excluding 3mm collar)\u003c\/li\u003e\n\u003cli\u003eNo - BTS80F\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dormakaba","offers":[{"title":"Default Title","offer_id":43424383664217,"sku":"DF-BTS80EN4","price":462.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/9035\/8617\/files\/Screenshot_11-6-2026_161848_www.duffells.com.jpg?v=1781174940","url":"https:\/\/metalix.co.uk\/products\/bts80-size-4-floor-spring","provider":"Metalix Hardware","version":"1.0","type":"link"}