{"product_id":"keystone-steel-box-lintel-box-k-100-3900-x-215mm-high-kbx139","title":"Keystone Steel BOX Lintel BOX\/K-100 3900 x 215mm High KBX139","description":"\u003cp\u003eThe Keystone steel box lintel features a 3900mm length and 215mm height, designed for structural support over large openings in cavity wall construction. Manufactured from galvanised steel, it provides a durable solution for supporting masonry loads in both residential and light commercial projects where standard duty performance is required.\u003c\/p\u003e\u003cp\u003eThis box-section lintel is suitable for use above patio doors, wide windows, or other long spans, offering reliable load distribution and installation flexibility. It accommodates wall widths from 100mm to 215mm, making it a practical choice for various build specifications on site.\u003c\/p\u003e","brand":"Keystone Lintels","offers":[{"title":"Default Title","offer_id":53107635323216,"sku":"U0007138","price":451.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/5417\/9408\/files\/55a714fcfa9e5d37e31b9375c3d86248.png?v=1780577546","url":"https:\/\/totalsite.supply\/products\/keystone-steel-box-lintel-box-k-100-3900-x-215mm-high-kbx139","provider":"Total Site Supply UK","version":"1.0","type":"link"}