1,This is not a GermGuardian OEM product. 2,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. 3,This replacement filter is designed specifically to fit for GermGuardian FLT4825 FLT4800 FLT4300. 4,Especially formulated to capture pets and offensive smoke,cooking and other household odors, can reduces common odors from pets, smoking and cooking. 5,After you install the new filter and turn the unit back on, press and hold the timer button for about 3 seconds (or until the red filter change light goes off) to reset the filter reminder. Description: It is the real filter - captures 99.99% of the particles.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. Features: This is not a GermGuardian OEM product. It is the real filter - captures 99.99% of the particles. 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 replacement filter is designed specifically to fit for GermGuardian FLT4825 FLT4800 FLT 4300. Especially formulated to capture pets and offensive smoke,cooking and other household odors, can reduces common odors from pets, smoking and cooking. After you install the new filter and turn the unit back on, press and hold the timer button for about 3 seconds (or until the red filter change light goes off) to reset the filter reminder. Specification: Condition: Color: As picture shown Size: (L) x (W) x (H) 41 x 13 x 4.5cm / 16.14" x 5.12" x 1.77"(appr.) Package Included: 1 x Filter B Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.