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Filter King

Filter King 21.5x21.5x1 Air Filter | 4-PACK | MERV 8 HVAC Pleated A/C Furnace Filters | MADE IN USA | Actual Size: 21.5 x 21.5 x .75"

    • Based on 2,615 reviews
Condition: New
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$49.99 Why this price?

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As low as $8.33 / mo
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Eligible for Return, Refund or Replacement within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Filter King LLC
Arrives May 3 – May 5
Order within 19 hours and 12 minutes
Available payment plans shown during checkout

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Size: 21.5x21.5x1


Features

  • FILTER: This is a MERV 8 rated 4 pack Air Conditioner Filter | Size: 21.5" x 21.5" x 1" - Actual Size: 21.5" x 21.5" x .75"
  • MADE IN USA: Fully manufactured in the United States. Made from the highest quality materials and construction. (EPA Establishment Number: 103501-FL-1)
  • 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.

Brand: Filter King


Product Dimensions: 21.5"L x 21.5"W x 0.75"Th


Compatible Devices: Air Conditioner, Furnace


Global Trade Identification Number: 80


Manufacturer: Filter King


Product Grade: 5


Brand Name: ‎Filter King


Model Info: ‎FK21.5x21.5x1A-M8


Product Dimensions: ‎21.5 x 21.5 x 0.75 inches


Country of Origin: ‎USA


Item model number: ‎FK21.5x21.5x1A-M8


Part Number: ‎FK21.5x21.5x1A-M8


Special Features: ‎Easy to Install


Compatible Device: ‎Air Conditioner, Furnace


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: November 15, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 3 – May 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Highly recommend
Size: 17.5x29.5x1
Good quality filters. I need an unusual size filter which I can get here. Filter fits perfectly. Very pleased.
Reviewed in the United States on June 11, 2024 by Geri A
    • Hvac filters
Size: 15.5x19.5x1
Arrived in great shape. Perfect fit.
Reviewed in the United States on May 4, 2024 by Paul W.
    • Best price for this size
Size: 20x21x1
Excellence product great price
Reviewed in the United States on June 8, 2024 by Annie Meza
    • Runs Wide
Size: 6x14x1A
Quality filter, but a tad bit wide and didn’t fit for my application.
Reviewed in the United States on May 15, 2024 by DanielSC
    • Hard size to find 17.5x17.5x1
Size: 17.5x17.5x1
This is a hard size to find so not a lot of options but this seller had it. Arrived on time and work great. What else can I say?
Reviewed in the United States on June 5, 2024 by DMG
    • Met my expectations
Size: 22x25x1
Arrived in a timely manner and is the right size.
Reviewed in the United States on May 14, 2024 by ACE
    • They do the job required
Size: 17.5x29.5x1
Easy to install, weird size that is much more expensive to purchase in a brick and mortar store
Reviewed in the United States on June 10, 2024 by Dana Miller
    • A sturdy Filter
Size: 16.25x21x1
It seems to be a very good filter for my air conditioner. I have used these filters for a few years and I am satisfied that it is a good product.
Reviewed in the United States on June 17, 2024 by Diane Lupo

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