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20x25x1 Air Filter Glasfloss ZL Series MERV 10 – Box of 4

Actual Size: 19-1/2 x 24-1/2 x 7/8
  • SKU: ZLP20251-4PK
  • MERV 10 performance with the no more resistance than MERV 8
  • Compare to MPR 900-1000, or FPR 7
  • Moisture Resistant, Heavy-Duty Construction
  • Eco-Friendly Design with Post-Consumer Materials
  • Easy to Install and Remove
  • 100% Synthetic Fibers Won’t Support Microbial Growth
  • 3 Month (90 day) Air Filter.
  • How Often Should I Change My Air Filters?

Original price was: $43.43.Current price is: $38.44.

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The Glasfloss MERV 10 Z-Line 20x25x1 air filters excel at removing allergens and dust from the air, making your home’s air cleaner. We designed the sturdy frame using heavy-duty, moisture-resistant materials, including recycled content, to make it easy to install and remove from your HVAC system. The synthetic fibers in the filter media won’t support mold growth or absorb moisture. By thermally bonding all parts together, we ensure extra durability. Choose these filters for their reliability and effectiveness in both homes and businesses.

About Air Filter Sizing

There are two main ways to refer to air filters: their Nominal size and their Actual size. The Nominal size is a simplified version of the dimensions of the filter and is how it is typically labelled and sold. The Actual size, however, is the exact dimensions of the filter. Some filters may have the same Nominal size, but different exact dimensions, which is why the actual size is important when it comes to ordering filters. For more information, please see our article "Nominal vs. Actual Air Filter Size”

MERV 10 Can Capture

MERV 10 Efficiency

MERV 10 air filters offer an upgrade from MERV 8 without making your system work harder or adding resistance. They are great for removing many allergens and providing better indoor air quality to your home or business.

How often should I change this air filter?

While we give an estimated life of each filter, how often your air filter needs to be changed depends on your individual situation. How many people live/work in your space, if you have pets, and even your location and time of the year can all affect how quickly your air filter gets dirty. We recommend checking your filter once a month to keep track of how dirty it’s getting. Check out our video explaining this in more detail on our “Air Filter Change Frequency” page.

How often to change your air filter.
Made in USA

Made in the USA

All Glasfloss air filters are proudly made in the USA in five manufacturing facilities across the country. Florida, Ohio, Texas, Nevada and Wisconsin.

Customer Reviews
5.0 Based on 5 Reviews
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Filter Reviews:
CD
10/25/2023
Christian D.
United States United States
I recommend this product

Perfect fit!

No issues. The price was great too

RM
05/10/2022
Rita M.
United States United States
I recommend this product

Have used Glassfloss filters for 25 yrs.

Great delivery time. Great product. It was easy to find my sizes on the site.

KM
08/11/2020
Ken M.
US

This is the only place

This is the only place we could find the filter that came in our new Trane system. And they are quite affordable too.

J
05/06/2020
Josh
US

I wish I’d heard about

I wish I’d heard about Glasfloss sooner. I’ve been using 3M for the longest time, and their quality has been in a steady state of decline. I’ll be back for more of these.

WS
06/03/2019
Wendy S.
US

Our filters arrived very quickly,

Our filters arrived very quickly, were in perfect condition and reasonably priced. We will be purchasing from Air Filters Unlimited again.