Filtrete 18x24x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter price history and forecast - Filtrete 321-4
Filtrete 18x24x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter

Filtrete 18x24x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter

Brand:
Filtrete
Model Number:
321-4
UPC:
051131974982
EAN:
0051131974982
Walmart SKU:
10721108
Key Takeaway

Price locked at $5.64 for 60 days, matching the 90-day average—suggesting this is the standard retail rate. Buyers shouldn't expect discounts soon.

Third-Party Seller Summary

No price history available for Third-Party Sellers

Walmart.com Summary

Walmart.com Price History Summary
Price Type Price Date
Highest Price
$7.49
Lowest Price
$4.97
Most Recent Price
$5.64
Average Price
$5.63
First Tracked
Last Update

Price Analysis

Tracking History: We have tracked Filtrete 18x24x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter since 11/16/2022. The most recent price update was on Jun 30, 2026.

Price Range: Over the past 90 days, the price has ranged from $4.97 (lowest on 11/16/2022) to $7.49 (highest on 6/14/2024). The average price during this period is $5.63.

Current Trend: Walmart.com prices have ranged from $5.64 (Jun 30) to $5.64 (Jun 30) over the past 90 days. Current price is close to the 90-day average of $5.64.

Customer Insights: Rated 4.6/5 from 506 reviews.

Customer Reviews

506 reviews

Customer Reviews

4.6
Based on 506 reviews
5
409
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26
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Showing 10 of 506 reviews
Tami April 8, 2026

Great quality and fit! I tried to save a couple bucks buying elsewhere in 5 pack, never could figure out why they were getting sucked in!! After buying these, I now know. People here say these are flimsy?? Not even close. They never get sucked in anymore, and they fit perfectly!

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Vicki February 27, 2026

These fit perfectly. They last a full 3 mths. Strong and durable. Nothing flimsy about these filters. Great value . Great great price. Work super good. Changing out your filters regularly keeps your unit lasting a very long time. I keep a little note on inside of my furnace door and write date I put in and date needs to be changed, I also write on the top edge of the filter date I install new filter. Just had my 14 yr unit serviced and got an A . Cha Aging filters can save you hundreds and even thousands of dollars. These filters are highly recommended for what needs to be achieved by filters. I have a York unit and changing filters keeps it in great shape.

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Low Price, High Quality

Beth April 25, 2026

These are some of the most affordable ac filters out there, and the quality is better than many of the more expensive options. These work well to filter and trap dust, pet dander, and allergens for a fraction of the price. When I hear anyone mention needing a new ac filter, I always tell them to get Filtrete from Walmart because it's the cheapest in price but great in quality.

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Great hvac filters

Beachlife March 18, 2026

These work great and are a good brand. Made of good quality and do an excellent job keeping the air in my house clean. When they are in stock I like to buy a 5 pack. I like to change them out monthly. They sell at an affordable price.

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a quick filter pickup

Sheri March 23, 2026

I pick this brand because they work! I find the product has enough options for me to pick from and being able to grab one instead of a multi-pack very convenient for my budget. They do have multi-pack options and a great price as well.

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Really GOOD VALUE

Kimberly April 16, 2025

Each filter arrives individually wrapped (improves handling and storage). Shipping was free. Arrived within 72 hrs. after ordering. Will definitely buy these again.

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Great filter

tabitha June 10, 2025

Bought a house and no clue when the previous owner changed the filter. Replaced it with this one and air quality improved and A/c unit works better. This is not one of those flimsy filters that barely stay in place. It fits perfect and stays in place .

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value

vicki December 28, 2025

best value, but no filters are perfect

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ErikwithaK October 31, 2025

This is a very low restriction filter that offers adequate filtration for most homeowners. It is a low MERV so those that require removal of allergens or pet dander will see little benefit. The frame of the filter is very flimsy and it lacks rigid strength. Again it's adequate for an economy filter but for some you may find this substandard. It fits my need for an economy low restriction filter. As such we would consider purchasing again.

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Terrible pick up experience

Henry May 15, 2024

Arrived at store instructions are totally wrong call number goes to voicemail three times.. finally find a store associate outside of the building who is very helpful Cisco he saved the day

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Price History

Historical price data graph for Filtrete 18x24x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter

Recent Price Changes

Detailed price history for the past 90 days

Walmart.com Pricing

60 records

Walmart.com prices have ranged from $5.64 (Jun 30) to $5.64 (Jun 30) over the past 90 days. Current price is close to the 90-day average of $5.64.

Walmart.com price history for Filtrete 18x24x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter showing recent price changes over the past 90 days
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$5.64
No third-party seller price history available for this product in the past 90 days.

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