The DW-20001 is a high-efficiency air filtration system manufactured by Honeywell. It uses a highly efficient composite filter that can remove particulates and gases from the air, providing clean air for multiple applications. The filter is designed to be durable and efficient, with a patented design that prevents it from clogging. It can be used in residential and commercial applications and is designed to fit most furnace, air conditioning and ventilation systems. The system works by drawing air through the filter and removing dirt, dust, pet dander, and other airborne particles, creating a cleaner living space.