{"product_id":"carlisle-brass-letterbox-intumescent-12-brass","title":"Carlisle Brass Letterbox Intumescent 12\" Brass","description":"\u003cp\u003eThis 12-inch brass letterbox is designed for straightforward installation in doors ranging from 40mm to 80mm thick. It includes an adjustable telescopic sleeve and metal flaps, offering a reliable solution for managing mail entries in domestic, commercial, or industrial settings.\u003c\/p\u003e\u003cp\u003eThe assembly features an intumescent liner that expands when exposed to heat, supporting its use in fire door installations. Brush pile draught excluders help reduce draughts and dust, while a fully sealed front plate enhances weather resistance. The identical internal and external appearance ensures a consistent look on both sides of the door.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAdjustable inner sleeves provide a secure fit for various door thicknesses\u003c\/li\u003e\n\u003cli\u003eIntegrated brush pile draught excluders help minimise heat loss and dust ingress\u003c\/li\u003e\n\u003cli\u003eIntumescent liner designed to expand in heat, supporting fire safety applications\u003c\/li\u003e\n\u003cli\u003eTwo-part assembly creates a tunnel effect for easier installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Carlisle Brass","offers":[{"title":"Default Title","offer_id":53106105057616,"sku":"U0165154","price":54.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/5417\/9408\/files\/d7670456372a7af37d356c8772237363.jpg?v=1780542383","url":"https:\/\/totalsite.supply\/products\/carlisle-brass-letterbox-intumescent-12-brass","provider":"Total Site Supply UK","version":"1.0","type":"link"}