FEATURES * 1.25" OD x 3.74" H * 10 micron paper filter * Includes elbow barb fitting * Also includes Preventative Maintenance sticker MODEL(S) THIS PART FITS: AirStar 1, AirStar 2-1, AirStar 2-2, AirStar 3, AirStar 5, AirStar 7, AirStar10, AirStar10C, AirStar21, AirStar21C, AirStar22, AirStar22C, AirStar30, AirStar30C, AirStar50, AirStar50C, AirStar70 NOTES: * AirStar 1, 10 & 10C use 1 air filter each * AirStar 2-1, 2-2, 21, 21C, 22, 22C, 3, 30 & 30C use 2 air filters each * AirStar 5 & 50, 50C use 4 air filters each * AirStar 7 & 70 use 6 air filters each