Vu-Flow NT 120 SC 24 Mesh (711 Micron) 2" Polyester Screen Spin Down Replacement Water Filter Cartridge Element
Wanted to put the word out on these incase it hasn't been done. These purple filters cost 3 dollars. First photo is no filter followed by purple filter. Omni 8 tubes. :
Amazon.com: Mann-Filter MA 1059 Air Filter : Automotive