{"product_id":"bts80-size-4-floor-spring-1","title":"BTS80 Size 4 Floor Spring","description":"\u003cp\u003eThe Dorma BTS80 Floor Springs are designed for versatility and reliability, featuring a fixed strength size 4. These floor 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\u003cp\u003eKey features include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHold Open\u003c\/strong\u003e: Allows the door to remain open at any angle between 75 and 175 degrees (note: hold open variants are not suitable for Fire Doors).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack Check\u003c\/strong\u003e: Prevents the door from being opened too forcefully.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelayed Action\u003c\/strong\u003e: Provides a controlled closing speed for safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Closing Speed\u003c\/strong\u003e: Customize the speed at which the door closes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Latch Action\u003c\/strong\u003e: Fine-tune the latch mechanism for optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\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\u003eTested to\u003c\/strong\u003e: BS EN1154.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 60mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 78mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 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\n\u003cstrong\u003eSpindle Options\u003c\/strong\u003e:\u003c\/li\u003e\n\u003cli\u003eYes - BTS80EN4 - 15mm (excluding 3mm collar)\u003c\/li\u003e\n\u003cli\u003eNo - BTS80F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Closing Speed\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Latch Action\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelayed Action\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackcheck\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHold Open\u003c\/strong\u003e: Adjustable between 75 and 105 degrees.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCE Marked\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon Handed\u003c\/strong\u003e: Yes\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dormakaba","offers":[{"title":"Default Title","offer_id":43483395522649,"sku":"DF-BTS80EN4","price":770.49,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/9035\/8617\/files\/BTS80EN4_1.webp?v=1782718085","url":"https:\/\/metalix.co.uk\/products\/bts80-size-4-floor-spring-1","provider":"Metalix Hardware","version":"1.0","type":"link"}