18x20x1 Air Filters

MERV 8 (Standard)

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18x20x1 Air Filter Description

Actual Size: 17 3/4" x 19 3/4" x 3/4"
Model: AFB18x20x1M8
Available In MERV Rating: 6 , 8 , 11 , 13 , Odor Eliminator
Made in the USA
Ships in 24 hours

MERV Rating Information

MERV 6 (Basic)

Actual: 17 3/4" x 19 3/4" x 3/4"
Model: AFB18x20x1M6

6 for 11.99 each

5% discount

PollenDust MitesMoldBasic Residential Use

MERV 8 (Standard)

Actual: 17 3/4" x 19 3/4" x 3/4"
Model: AFB18x20x1M8

6 for 14.99 each

5% discount

PollenDust MitesMoldLarger dust particles, like pudding mixStandard residential / commercial use

MERV 11 (Superior)

Actual: 17 3/4" x 19 3/4" x 3/4"
Model: AFB18x20x1M11

6 for 18.99 each

5% discount

PollenDust MitesMoldAuto Emissions / Large Particles like Milled FlowerSuperior Commercial and Residential

MERV 13 (Best)

Actual: 17 3/4" x 19 3/4" x 3/4"
Model: AFB18x20x1M13

6 for 21.99 each

5% discount

PollenDust MitesMoldAll BacteriaProplet Nuceli (sneeze)Smoking LoungesBest of breed, hospital grade filter

Odor
Eliminator

Actual: 17 3/4" x 19 3/4" x 3/4"
Model: AFB18x20x1OE

6 for 17.95 each

5% discount

PollenDust MitesMoldLarger dust particles, like pudding mixStandard residential / commercial use

For the absolute best value in 18x20x1 filters today, look no further than FilterBuy! You’ll enjoy our Made in the USA quality and factory direct prices just as much as our same day shipping and no-cost shipping on orders over $75! Now that you have found the 18x20x1 filter size to accommodate your HVAC system, simply choose from among the four distinct performance options below to strike the perfect balance between filtration performance and overall price. Our MERV 6-rated filters are an excellent choice for those looking for maximum filtration at a low cost. These filters remove dust mites, pollen, mold, and more, and they are value priced to enable timely filter changes. An upgrade to a MERV 8 unit delivers additional dust filtering, while a MERV 11 or 13-rated filter will deliver hospital-grade performance – all without breaking the bank. Since 1958, our family-owned business has helped customers find the perfect replacement filters for their HVAC systems and household appliances. Contact us today to find yours!

 

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Build a Custom Size

Simply measure the length and width of your filter with a tape measure and choose the closest size (to 1/8”) in the drop down menu. 1/8” tolerance is standard and should not cause a problem in any standard filter application.

Please note that the ‘actual’ filter size, ie the size that your tape measure shows, should be used when creating a filter with this tool, not a nominal filter size. Note that the depths of each filter are standard, as shown to the right.

Simply measure the length and width of your filter with a tape measure and choose the closest size (to 1/8”) in the drop down menu. Please note that the filter depth is standard.