Specifications

Nominal size
16 × 20 × 5 inches
Actual size
15.5 × 19.5 × 4.75 inches
MERV rating
MERV 8 (Standard)
Filtration
90% of particles
Captures down to
3 microns
Filter life
90 days
Manufacturer
Made in USA
Ships
Within 24 hours

16×20×5" MERV 8 Air Filter

Actual size: 15.5" × 19.5" × 4.75" · Made in USA · Ships in 24 hours

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Pack Per filter Total Savings
1-pack $58.00 $58.00
2-pack $30.74 $61.48 47% off
4-pack $18.21 $72.85 69% off
6-pack Best value $14.38 $86.30 75% off
12-pack $12.93 $155.21 78% off
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Common questions about 16×20×5 filters

What is the actual size of a 16x20x5 filter?
The nominal size 16x20x5 has an actual size of 15.5" × 19.5" × 4.75". Nominal sizes are always rounded up — this is standard across all filter brands and manufacturers.
How often should I change my 16x20x5 MERV 8 filter?
Every 90 days for most homes. Homes with pets should change every 30–60 days. Homes with severe allergies or asthma may benefit from monthly changes with MERV 11 or 13 filters.
Will a 16x20x5 filter fit my system?
If your existing filter reads "16x20x5" on the cardboard edge, yes. Always match the nominal size printed on your current filter, not the actual physical measurements.
What's the difference between MERV 8, 11, and 13 for this size?
MERV 8 captures dust, pollen, and pet dander (90% efficiency). MERV 11 also captures fine particles and smoke (95%). MERV 13 captures bacteria and virus carriers (98%). Higher ratings may slightly reduce airflow — check your HVAC manual if unsure.