100% Secure Payments

Loved by our Customers. 8000+ Reviews

Free Shipping and Free Returns

16x20x4 Air Filter MERV 11 Glasfloss FC100A1003 Replacement – Box of 5

Actual Size: 16 x 19-7/8 x 4-3/8
  • SKU: HWP16204M11
  • MR-11
  • Compare to MPR 1000-1200, 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 (More info)


Free Shipping
Free Returns
100% Secure Checkout
Free Shipping Free Returns Secure Checkout

Ships in 5-10 Business Days

Our MERV 11 air filters are a great upgrade from MERV 8 air filters if you have pets in your home or suffer from allergies or asthma. These air filters are 85% efficient at capturing particles in the 3-10 micron range and up to 80% efficient at capturing particles in the 1.0-3.0 micron range. The filter frame is constructed of heavy-duty beverage board to insure it maintains its integrity for the duration of its service life. The pleated media won't support microbial growth due to its 100% synthetic construction. Our MERV 11 air filters last up to 90 days depending on the conditions in your home. Check out our "Air Filter Change Frequency" page for additional information.
Customer Reviews
5.0 Based on 2 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
Jonna V.
United States United States
I recommend this product

Fit perfectly

The website was easy to use and the filters fit perfectly. I had tried to buy locally but there were the incorrect size. While all say 16x20x4”, only the AirFilters Unlimited matched the manufacturer’s dimensions. And the price was fantastic!! Thank you for having this product available. I bought the 5 pack for even better savings and to have them on hand so I can change the filter as needed. The last few years of wild fires has really taxed the filters with smoke and ash.


They were delivered promptly and

They were delivered promptly and work great. Fit was perfect as described.