Filtron Air Nylon Filter can filter dust in long time due to durable and strong plastic net.The nylon primary air filter is made up of PP fiber textile molding, acid and alkali resistant, corrosion resistant. The resistant is low thus can be washed on a regular basis and the arrested dust can be easily cleaned, the filtration efficiency is also not affected by regular cleaning. High quality PP fiber textile black nylon net is supported with stainless steel rod which is housed in a galvanized frame or aluminum frame.