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20 x 25 x 1 Eco Plus Adjustable FPR 4 Air Filter

  • Fibers are charged to attract a variety of airborne particles
  • 3-step filtration ensures thorough purge of air impurities
  • MERV 8 filter with 19.63 x 24.63 x 0.75 (in.) actual dimensions
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Product Overview

The Web ECO Filter Plus has electrostatically charged fibers that attract and capture dust, mold, pollen and dander. The Web ECO Filter Plus frame can be reused for up to 10 years with proper care. Simply rinse with water, let dry and reinstall in your HVAC system. The Web ECO Filter Plus reduces landfill waste and is made from recycled plastics.
  • Traps up to 91% of pollen, dust, and dander-sized particles from 0.3 to 10 microns
  • Simply rinse and reuse
  • Electrostatically-charged fibers attract airborne allergens
  • Filter performance rating (FPR) of 4
  • 3 stage filtration - stage 1 captures larger particles
  • Stage 2 captures smaller particles
  • Stage 3 traps remaining particles

Info & Guides

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Actual Product Depth (in.)
Actual Product Height (in.)
Actual Product Width (in.)
Air Filter Depth (in.)
Air Filter Height (in.)
Air Filter Size
Air Filter Width (in.)


Air Filter Features
Air Filter Type
Contaminants Captured
Bacteria,Dust/Lint,Mold Spores,Most Smoke,Pollen
Filter Frame Material
Filter Material
Filter Performance Rating (FPR)
4-5 - Good
Longevity (months)
MERV Rating (Minimum Efficiency Reporting Value)
Pack Size

Warranty / Certifications

Manufacturer Warranty
Warranty by manufacturer against materials and workmanship.

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4
    out of 427 reviews
  • 77%recommend this product
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Showing 1-10 of 427 reviews
Poor design but good for fostering frustration
My house requires 2 filters.i bought 1 of these to try. I convinced whoever designed this very likely doesn't use it. I'm fairly mechanical. I designed and built most of the furniture in my house. I've restored classic cars. I designed and built the shed in my back yard. I enjoy wooden Chinese puzzles. 6 months ago I bought this and ended up putting it away until my assembly frustration cooled. Today was my second and last attempt at putting this together. It can be done but I'd recommend using duck tape along the edges to keep it together while you fight the frame. This also could be improved by redesigning the grid to match standard sizes of hvac filters so that the black grid had even smooth edges after being cut. In addition there should be a way to hold the mesh screens and the form filter together without the frame. I used duct tape. The tape also helped smooth the grid edge so it would be easier to tuck into the frame. I've spend about 2 hours trying to get it to work correctly. I ended up throwing this in the trash and would not recommend it to anyone.
    I opted to purchase this filter instead of going with our normal disposable filters last month (M...
    I opted to purchase this filter instead of going with our normal disposable filters last month (May 2020). We did no need to cut the filter as it already fit, but I did observe how one would cut it and put it back together and it seems straightforward. The only thing I don't love is that when the air kicks on, this filter seems to have a small gap where it gets sucked up and clicks against the metal in the intake, but this could be solved with a paper shim. This seems to work at least as well as our standard-grade disposable filters that we used to buy, and is holding up well against pet hair and dust. You will need 2 - one to be in the filter, one to be washed and dried. We rinse ours outside with a hose and then blow it out with an air compressor, and store it wrapped in a towel in a loosely cinched garbage bag in the garage so that it doesn't stay damp and is somewhat protected from debris and bugs.
      • Recommended
      2 people found this helpful
      I dont ever write reviews but this one deserved it
      This filter is junk ive had it in my furnace about a month and i went to pull out and clean it.well lets just say that wasnt a 2 min thing bc the filter opened inside and would not fit through the opening and i had to take the return apart to get it out.and to top all that off it looks brand new like the day i put it in which tells me it failed as a filter as well! Absolute garbage!
        • Recommended
        1 person found this helpful
        a much better alternative to throwaway filters.
        a much better alternative to throwaway filters.
        • Verified Purchase
        • Recommended
        1 person found this helpful
        Works awesome as reusable aquarium filter material!
        It may seem odd but this material works a million times better that the cheap filter material that breaks down. My 125 gallon tank looks great because of this material. I simply remove the grid (wife is a teacher and uses them at her school).
        • DIY
        • Verified Purchase
        • Recommended
        2 people found this helpful
        1/2 inch too small
        I bought this filter from the store while shopping for a replacement filter. The store recommended it, but when I got home I looked up reviews and read them. I then took my unopened, unadjusted filter and tried to inset it and saw that the 20" inches (my width) is 1/2 inch too narrow and would miss covering the vent opening by about 1/8 inch. When holding it next to my 20 x 20 filter I had in there it was 1/2 inch shorter! WOW, what a pain and why must it be? Can they not measure 20" inches? I will have to drive back to the store and buy something else. I would guess then every measurement when cut/adjusted to size would be off 1/2 inch! What...The........??!!
          7 people found this helpful
          This is good for outdoor air conditioning...
          This is good for outdoor air conditioning
              Filter should be all one piece and not come apart..then...
              Filter should be all one piece and not come apart..then you could use wiss wire snips straight down the square line….frame edge piece is not good opens when putting together 2person job also not enough tabs to hold frame edge had to use tape.worked this winter ps maybe make out of flexible plastic?ps trying to get it back together can’t tell the flow of air dark blue up light blue down?
                Tricky to trim, assemble, and keep together. Ended up buying...
                Tricky to trim, assemble, and keep together. Ended up buying disposables again and tossing this one.
                Response from Product ExpertNov 1, 2021
                Thank You, for your feedback. There should have been locking tabs to secure the frame included with your Web Eco Plus Adjustable
                packaging. ProtectPlus
                  Showing 1-10 of 427 reviews