{"product_id":"intumescent-letter-box-strip-1","title":"Intumescent Letter Box Strip","description":"Fire resistant intumescent strips for wrapping around letter plates. Self adhesive to fix around the letter plate before inserting into the door.Essential for when fitting a letter plate into a Fire door to maintai n its fire and smoke protection. Each strip has been tested to provide 30 minute fire protection - Use 2 strips for 60 minutes.Recommend to use with Heavy Duty letter plates - MPL608 to MPL610.Sol d singly - Letter plate NOT included.","brand":"Intumescent","offers":[{"title":"Default Title","offer_id":56744325972354,"sku":"MPL617-JMA","price":20.49,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/northantstrade.co.uk\/products\/intumescent-letter-box-strip-1","provider":"Northantstrade","version":"1.0","type":"link"}