【High Quality Material】This dryer filter is made of high quality black sponge, which has strong drainage after being soaked in water, good air permeability, is elastic, not easy to damage, harmless to human body and environment, can be used twice, safe and odorless, you can use it with confidence. 【Double Layer Design】This dryer filter adopts two-layer design, one thick layer and one thin layer of sponge pad. The fine filter side is used to filter small particles, and the coarse filter side is used to filter coarse lint. 【Easy to Install】When installing dryer filters, you just need to open the maintenance cover at the bottom of the dryer, remove the filter plate, insert the new filter sponge into the filter plate, and finally press the filter plate to the bottom of the dryer and close the maintenance cover. Installation is easy and no other complicated operations are required. 【Necessary Replacement Parts】To protect your health and maintain the stable operation of your heat pump dryer, please replace the Sponge Filter. It is recommended to clean the filter regularly and replace it within 60 days. Replacing new filters ensures high performance and low energy consumption of the dryer. 【Scope of Application】 Filter mat has a wide range of uses. It is mainly suitable for the filter layer of heat pump dryers, aquarium filters, vehicle air filters, and the filter layer of other air conditioners. It can also be used as a filter material in the metallurgical industry.