• Spend $70 or more and your order ships free! We'll get your filters out the door fast so you can enjoy clean air and water.*

    * Orders under $70 ship for $5.99.

  • Shop with confidence! If you're not completely satisfied with your purchase, you have up to one year to return it for a refund or exchange. We stand behind every filter we sell.

    Learn More

  • Every order is carefully packed and shipped by our team in Indiana. Your purchase helps support American jobs and hardworking families right here in the Midwest. Our AIRx Furnace / AC Filters and ClearChoice Fridge Filters are made in the USA.

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  • Spend $70 or more and your order ships free! We'll get your filters out the door fast so you can enjoy clean air and water.*

    * Orders under $70 ship for $5.99.

  • Shop with confidence! If you're not completely satisfied with your purchase, you have up to one year to return it for a refund or exchange. We stand behind every filter we sell.

    Learn More

  • Every order is carefully packed and shipped by our team in Indiana. Your purchase helps support American jobs and hardworking families right here in the Midwest. Our AIRx Furnace / AC Filters and ClearChoice Fridge Filters are made in the USA.

Cart 0

We don't know what's in your water,
but we know there's nothing in your cart.

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  • Home
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  • Fiberglass 18" X 24" X 1" Panel Filter - Equipment Protection

Fiberglass 18" X 24" X 1" Panel Filter - Equipment Protection

4
14 reviews
◆
 
Average rating 4.1/5
5 stars
(10)
4 stars
(1)
3 stars
(0)
2 stars
(1)
1 star
(2)
CA, Inc. FG18x24x1Our#: 188123
Made in USA
Fiberglass 18" X 24" X 1" Panel Filter - Equipment Protection
Fiberglass 18" X 24" X 1" Panel Filter - Equipment Protection
Fiberglass 18" X 24" X 1" Panel Filter - Equipment Protection
Compatibility guarantee — Wrong fit or not happy - we'll make it right, up to a whole year
Change every 1 months
Change every 1 months Swap on schedule for best performance
Made with pride in Greenwood, Indiana
Made with pride in Greenwood, Indiana Your purchase supports American jobs
Compatibility guarantee
Compatibility guarantee Wrong fit or not happy - we'll make it right, up to a whole year

Filter Description

If you want to protect your HVAC system from dust and dirt, this is the filter for you! Fiberglass panel filters are an inexpensive option that provide basic equipment protection and high airflow. Ordering filters online is very convenient. Purchase a case of fiberglass filters and we will deliver them to your door quickly!
Engineered for sturdy, economical performance and ease of use
Compression-resistant fiberglass media has high dust-holding capacity
Replace every 30 days under normal use
Made with pride in the USA
100% free returns on all filters

$68.99

$86.24
Code DF20 · Save 20%
$5.75 per filter
Code DF20 · Save 20%
SAVE 0% 12-pack

Pack Size

In Stock, Ships onFriday, Oct. 2nd
Just $70.00 more for free shipping! Get this — more unlocks free shipping! Buy this and your order ships free!

Orders over $70 ship free. $5.99 otherwise.

Your Order Ships Free!

Compatibility guarantee

Wrong fit, leak, or just doesn’t work? We’ll send the right one. Free return shipping for all orders.

365-day satisfaction

Not happy? Send it back any time in the first year — we’ll make it right. Yes, even an open pack you’ve been running for months.

No-hassle returns

No restocking fees, no return-merch authorization mazes — just start a return and our helpful Customer Experience team will assist.

Filter Maintenance

Is it time to change your Filter?

Generally, we recommend you replace your air filters every 90 days. Find out below if you should change your filters more often.

If someone in your home has asthma or allergies change your filter every

6 Weeks

to ensure indoor air quality is at its best.

If you have pets change your filter every

2 Months

to avoid shedding and odor buildup.

If you have young children change your filter every

2–3 Months

as having clean air is even more important with children in your home.

Filter Specifications

What does this filter remove?

Filtration capabilities
Nominal Size
18 × 24 × 1"
Actual Size
17 ¾ × 23 ¾ × ⅞"
Filter Media
Compression resistant double skinned fiberglass media
Frame
Moisture resistant chipboard
Max Temperature
150F (65C) continuous service
Max Humidity
Resistant to 100% R.H.

Performance Testing

About This Product

Is this the right air filter for you?

If you want to protect your HVAC system from dust and dirt, this is the filter for you!  Fiberglass panel filters are an inexpensive option that provide basic equipment protection and high airflow.  Ordering filters online is very convenient.  Purchase a case of fiberglass filters and we will deliver them to your door quickly!

  • Engineered for sturdy, economical performance and ease of use
  • Compression-resistant fiberglass media has high dust-holding capacity
  • Replace every 30 days under normal use
  • Made with pride in the USA
  • 100% free returns on all filters

Customer Reviews

4.1 4.1 out of 5 stars
14 verified reviews
5★
(10)
4★
(1)
3★
(0)
2★
(1)
1★
(2)
4
4.1 / 5 (14)
John G. 21 days ago
5
Works great with both AC units I have. Can't beat the price.
Charles B. 98 days ago
5
purchased a box of them, so I'm good for a year. exactly what i needed and the price was right. Discount Filters is my go to place for great service and value, and I've been a customer for over 10 years. A non brainer, when I need a filter this is where I go.
jane 749 days ago
5
Great price fast delivery
Matthew M. 1022 days ago
5
Filter meet my approval, they fit like a glove, I recommend your company to everyone.
Julie B. 1037 days ago
5
I’m glad I can order these online. It always seems if I pick one up at the local store, I always end up messing it up.
Janette E. 1166 days ago
5
Filters were what I was looking for since I have an older home. Fast Delivery and great customer Service.
Paul 1182 days ago
5
Filters work great and are just as advertised.
Michael B. 1513 days ago
5
I have been using Discount filters for several years and never disappointed
Donald K. 1541 days ago
5
Products are always great! Would like replacement Haywood pool filters. Can you help? Thanks
John H. 1616 days ago
4
No comment
Sylvia W. 1962 days ago
5
Fine. I preferred the AMF ones but you no longer carry them so these are fine.
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