1-Inch Pleated● In stock
21.5×23.25×1Air Filter
Actual size: 21.5″ × 23.25″ × 0.75″
Exact-cut OEM size, the printed size is the true size.Also sold as 23.25x21.5x1.
Exact-cut OEM size, the printed size is the true size.Also sold as 23.25x21.5x1.
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Choose your protection level
Pack size (bigger packs save more)
21.5x23.25x1 · MERV 11 · 3-Pack$50.97$32.49
Or subscribe: $9.49/filter delivered, never think about it againMERV 11 · 3-Pack
$32.49
Common questions about 21.5x23.25x1
What is the actual size of a 21.5x23.25x1 filter?+
21.5x23.25x1 is an exact-cut size: it measures a true 21.5" × 23.25" × 0.75". It's made for specific OEM return grilles.
Which MERV rating should I pick for a 21.5x23.25x1?+
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, and it's fine in modern systems (post-1995 blowers). When in doubt, call us, a real HVAC tech answers.
How often should I change a 21.5x23.25x1 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 23.25x21.5x1 the same as a 21.5x23.25x1?+
Yes, 21.5x23.25x1 and 23.25x21.5x1 are the same filter; the dimensions are just written in a different order. This filter fits both.
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