Hero image 0 of Filter King 18x21x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 18 x 21 x .75", 0 of 5
Filter King 18x21x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 18 x 21 x .75"
Key item features
- FILTER: This is a MERV 8 rated 4 pack Air Conditioner Filter | Size: 18" x 21" x 1" - Actual Size: 18" x 21" x .75"
- MAX PERFORMANCE: Our filters can last up to 90 DAYS before needing replacement. We do recommend to change your home air filter every 30 - 90 days for 1 inch filters. This will help maintain the longevity of the intended application like A/C and heaters
- CAPTURE MORE: Protect your home! The pleated design captures more particles and extends lifetime of the filter. Merv Filters trap airborne particles without impacting air flow. Feel the difference in 48 hours.
- FAST & EASY INSTALLATION: Open, Slide and Close! A simple yet effective replacement air filter for your home.
Specs
- Minimum efficiency reporting values (merv)8
- Contaminants removedDust
- BrandFilter King
- FeaturesPleated
- Thickness1"
- MaterialPleated
Current price is USD$66.56
Price when purchased online
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Columbus, 43215
Arrives by Wed, May 6
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Sold and shipped by Filter King LLC
4.550769230769231 stars out of 5, based on 325 seller reviews(4.6)325 seller reviews
Free 30-day returns
About this item
Product details
Filter King Merv 8 18x21x1 4-Pack Air Filter actual size is 18x21x1.75. Our 18x21x1 Furnace Filters are designed to last up to 90 days. These pleated 1-inch air filters are ideal for maintaining the efficiency of your heating and cooling systems. Make sure you measure your filter. The actual size of this pleated Merv 8 filter is 18 x 21 x 1-3/4
- FILTER: This is a MERV 8 rated 4 pack Air Conditioner Filter | Size: 18" x 21" x 1" - Actual Size: 18" x 21" x .75"
- MAX PERFORMANCE: Our filters can last up to 90 DAYS before needing replacement. We do recommend to change your home air filter every 30 - 90 days for 1 inch filters. This will help maintain the longevity of the intended application like A/C and heaters
- CAPTURE MORE: Protect your home! The pleated design captures more particles and extends lifetime of the filter. Merv Filters trap airborne particles without impacting air flow. Feel the difference in 48 hours.
- FAST & EASY INSTALLATION: Open, Slide and Close! A simple yet effective replacement air filter for your home.
info:
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Specifications
Minimum efficiency reporting values (merv)
8
Contaminants removed
Dust
Brand
Filter King
Features
Pleated
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
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Showing 1-1 of 1 review
Jan 3, 2026
Jean P.
5 out of 5 stars review
Seller Verified Purchase
Great service
I order the wrong size and reach out to them. In less the 48 hours they sent me a replacement at not cost and told me to keep the wrong size or donate it. Great service
Review from filterking.com
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