Filter King 20x21x1 Air Filter 4-Pack, MERV 13
MERV 13 pleated air filters, 20x21x1 (actual 20x21x0.75), designed for furnace and AC. Provides extended filter life and improved air clarity; customers note good fit and performance
Highlights
- MERV 13 rated filtration
- 4-pack for multiple replacements
- Made in USA
Pros
- MERV 13 filtration
- 4-pack quantity
- Made in USA
- Pleated design for more particle capture
- Simple installation
Cons
- Some feedback on size accuracy
- Sturdiness concerns from some users
Best For
Features
- MERV 13 rated pleated air filter for HVAC systems
- Actual size 20 x 21 x .75 inches; nominal 20 x 21 x 1 inches
- Pack includes 4 filters; manufactured in the United States
- Designed for up to 90 days of use, recommended replacement every 30–90 days