Honeywell 21x21.5x5 Merv 10 Furnace Filter 3 pack TRN2121R1/E
Replacement Filter for Trane or American Standard Perfect Fit, Manufactured by Honeywell. This furnace filter has a Merv 10 Rating that is 20 times more efficient than the typical 5 inch filter. Helps filter Dirt & Fibers, Pollen, Mold Spores, Dust, and household lint to prevent common allergies out of household. To maximize performance it is best to change at least two times per season.
- Lasts 6 months
- Catches high percentage of household airborne particles,
- Merv 10 Rating
Includes: 3 per case
Fits: Trane or American Standard Perfect Fit