1 / 7Simply SF18x24x1 MERV 8 Air Filter, 6-Pack
Simply SF18x24x1 is a six-pack of MERV 8 pleated filters for compatible home or commercial HVAC systems. Its listed actual dimensions are smaller than the nominal 18 x 24 x 1 size, so compare them with your filter slot before ordering.
At a glance
- Six filters for replacing a compatible 18 x 24 x 1 nominal-size filter.
- MERV 8 rating and pleated electrostatically charged synthetic media.
- The manufacturer says the filters capture dust, mold, pet dander and pollen.
Reference price: $50.99
Price checked: Nov 11, 2026
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Pros and cons
Pros
- Six filters in one pack support scheduled replacements without buying a single filter each time.
- The listing gives both nominal sizing and smaller actual dimensions, helping buyers compare against the equipment slot.
Technical specifications
11 specifications| Brand | Simply |
|---|---|
| Model | SF18x24x1 (17.75 x 23.75)M08-6PK |
| Dimensions listed | 17.75"L x 23.75"W x 0.75"Th |
|---|---|
| Weight listed | 2 pounds |
| Material listed | Electrostatically Charged Synthetic Pleated Media |
|---|---|
| MERV rating | 8 |
| Compatible devices | Air Conditioner, Furnace, Heat Pump |
| Filter construction | 24-Point Beverage Board, Hot-Rolled Steel Wire Mesh, Pleated |
| Number of filters | 6 |
|---|---|
| Claimed filtration life | up to 3 months |
| Claimed particle capture | 90% of airborne particles |
What to know before buying
- Confirm your unit's required filter dimensions: the nominal 18 x 24 x 1 size is listed with actual dimensions of 17.75"L x 23.75"W x 0.75"Th. The claimed filtration life is up to 3 months, actual replacement timing may depend on use and conditions.
What’s in the box
Included- 6 air filters
- Installation guide
Who is it for?
A good fit for
- People whose AC, furnace or heat-pump filter slot matches the listed actual dimensions and calls for MERV 8.
- Buyers seeking a multi-filter supply for routine HVAC filter changes.
Less suited to
- Anyone whose equipment requires a different filter size or a different MERV rating.
Customer reviews on Amazon
- 5 stars
82% 82% - 4 stars
11% 11% - 3 stars
3% 3% - 2 stars
1% 1% - 1 star
3% 3%
Customer feedback is generally favorable: the supplied summary reports praise for quality, dust and allergen filtration, airflow and value, while experiences with fit, size and purchase experience are mixed. That sizing disagreement matters here because the listed actual dimensions are 17.75 x 23.75 x 0.75 inches, check the slot measurements before buying. The aggregate rating is 4.7 out of 5 from 55,438 global ratings, but ratings alone do not establish fit for a particular unit.
Positive themes
- Customers are reported to praise quality, filtration, functionality and value.
Mixed feedback
- Customer feedback is mixed on fit and size, including reports that filters were smaller than expected or did not match units.
- The supplied summary also reports differing purchase experiences.
Frequently asked questions
What are the listed actual dimensions?
The listing gives 17.75"L x 23.75"W x 0.75"Th, compare these with your unit's filter slot rather than relying only on the nominal 18 x 24 x 1 size.
How many filters are included?
The listing states six air filters and an installation guide.
Which systems does the listing name as compatible?
It names air conditioners, furnaces and heat pumps, confirm the required size and rating for your specific system.
How often does the manufacturer suggest replacing a filter?
The listing claims up to 3 months of filtration. Treat that as a stated maximum, not a guarantee for every home or operating condition.
Alternative options
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Filterbuy 18x24x1 Air Filter MERV 8 Dust & Allergy Defense (1-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 17.38 x 23.38 x 0.75)
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Filterbuy 16x24x1 Air Filter MERV 8 Dust & Allergy Defense (4-Pack) | Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 15.38 x 23.38 x 0.75)
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Filter King 18x24x1 Air Filter MERV 8, AC Furnace Filters (6-Pack) | Dust & Allergy Control (Actual Size: 17.5 x 23.5 x .75)
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Simply 14x24x1 Air Filter, Merv 8, 4 Pack, For Home AC Furnace & HVAC (Actual Size: 13.75"x23.75"x0.75") DUST, Pet, & Allergy Control
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