CFS – 4.8" x 15.75" Activated Carbon Pre-Filters Compatible with GermGuardian FLT4825 HEPA Filter and AC4800 Series (Filter B) – Removes Odor, Smoke & VOCs – Replacement Pre-Filter – 4 Pack

CFS – 4.8" x 15.75" Activated Carbon Pre-Filters Compatible with GermGuardian FLT4825 HEPA Filter and AC4800 Series (Filter B) – Removes Odor, Smoke & VOCs – Replacement Pre-Filter – 4 Pack