For grade 1 Fire rated lock, everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our grade 1 Fire rated lock has been well received by many customers and enjoyed a good reputation in many countries. D&D Hardware grade 1 Fire rated lock have characteristic design & practical performance & competitive price, for more information on the grade 1 Fire rated lock, please feel free to contact us.