- Contains an Antimicrobial Treatment by MicroFree to prevent growth and migration of mold, fungus, algae, and bacteria. Also features durable construction for maximum life and humidity output.
- Replace your filter every 4-6 weeks for best performance and comfort
- Fits Aprilaire 500 Series Humidifier Models: 500, 500A, 500M
- Approx. Measurements: 9 1/2" x 9 3/8" x 1 7/8"
Includes: 12 Filters
Aprilaire Replacement Humidifier Part Numbers: 10
RPS BestAir Replacement Part Numbers: A10PR
These Filters are Replacements Manufactured by Best Air RPS Products. Fit and Function are Backed With a 30-day Money Back Guarantee.