2-Inch Pleated● In stock
18×24×2Air Filter
Actual size: 17.5″ × 23.5″ × 1.75″
Fits any 18x24x2 slot or return grille. Order by the size printed on your old filter.Also sold as 24x18x2.
Fits any 18x24x2 slot or return grille. Order by the size printed on your old filter.Also sold as 24x18x2.
- Free shipping $100+
- Fit guarantee
- Picked by HVAC techs
Choose your protection level
Pack size (bigger packs save more)
18x24x2 · MERV 11 · 3-Pack$58.47$37.49
Or subscribe: $11.99/filter delivered, never think about it againMERV 11 · 3-Pack
$37.49
Common questions about 18x24x2
What is the actual size of a 18x24x2 filter?+
The nominal size printed on the frame is 18x24x2, but the filter actually measures 17.5" × 23.5" × 1.75". That undercut is intentional, it slides into your filter track without binding. Order by the nominal size printed on your old filter.
Which MERV rating should I pick for a 18x24x2?+
MERV 8 handles everyday dust. MERV 11 is our most popular, it captures pet dander and pollen. MERV 13 adds smoke, bacteria, and virus-carrier capture. When in doubt, call us, a real HVAC tech answers.
How often should I change a 18x24x2 filter?+
Every 30-90 days. Monthly if you have pets or allergies; every 2-3 months otherwise. Our subscription handles the schedule for you.
Is a 24x18x2 the same as a 18x24x2?+
Yes, 18x24x2 and 24x18x2 are the same filter; the dimensions are just written in a different order. This filter fits both.
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