LSE Lighting Pack of 3 - True HEPA Filter C for GermGuardian FLT5000 FLT5111 AC5000 Series Brand: LSE Lighting - Pack of 3 Filters Type: True HEPA Replacement Filter C (True HEPA Filter - Captures 99.99% of particles) - Size: 19.4 x 5.2 x 2.5 inches This HEPA replacement Filter by LSE Lighting brand is designed specifically to fit the GermGuardian Air purifier models AC5000, AC5000E, AC5250PT, AC5300B, AC5350W, AC5350B. Note: This filter is absolutely essential for allergy sufferers designed to filter smoke, dust, pet dander, pollen, mold pores, fabric and other allergen air borne elements. This is not a GermGuardian OEM product. Any use of the GermGuardian brand name or model designation for this product is made solely for purposes of demonstrating compatibility. This Filter is by LSE Lighting brand. We do not sell GermGuardian brand filters. All GermGuardian brand names, trademarks and logos are property of GermGuardian respectfully.