Introducing the D Series of Air Coolers – your ultimate indoor cooling solution designed to seamlessly integrate with condensing units for a variety of cold room applications. Tailored for specific temperature ranges, this series is meticulously engineered to meet diverse cooling needs through its three distinct subseries: DL, DD, and DJ. - DL Air Cooler: Perfect for maintaining an environment around 0ºC, this model is the ideal choice for fresh-keeping cold storage, ensuring your perishables remain in pristine condition. - DD Air Cooler: With a focus on temperatures around -18ºC, this variant excels in standard cold storage applications, providing reliable and efficient cooling. - DJ Air Cooler: Designed for extreme conditions with temperatures plummeting below -25ºC to -30ºC, this powerhouse is specially crafted for blast freezer rooms, making it indispensable for rapid freezing requirements. Experience the pinnacle of cooling technology with Harbin Dongan Building Sheets Co., Ltd.'s Cold Room Air Coolers, where fast cooling meets unparalleled reliability.