Nahar Engineering Service (BD). is a leading double leaf fire rated door supplier in Bangladesh, we have UL-listed fire-rated doors at a cheap price, fully compliant with the Bangladesh Building Code. Our high-quality UL-listed double-leaf fire-rated door is meticulously engineered to meet the stringent requirements of the Bangladesh National Building Code (BNBC). Also, we offer fire-rated door installation at a very reasonable cost in Bangladesh.