100% Free U.S. Shipping

Free shipping, free returns

21x21x1 MERV 8 Pleated Air Filter

Made in the USA

Filterbuy ships replacement air filters in 24 hours icon

Ships in 24 Hours

Save 5% with Subscription

icon indicates a Minimum Efficacy Rating Value of 8 for the replacement air filter

MERV 8 / Silver

Standard

3 Month Filter

21x21x1 MERV 8 filters made and manufactured by FilterBuy
Actual Size 20.5x20.5x1"
Traps and blocks over 90% of pollen, dust mites, mold, larger dust particles, and more.
Ideal for standard and residential commercial use
Designed to last 90 days. Replace regularly for optimum performance.
Free shipping on all orders!
Learn more about 21x21x1 Air Filters.

Choose another Size

Other MERV Ratings Available

21x21x1
MERV 8
Silver
Standard

21x21x1
MERV 11
Gold
Superior

21x21x1
MERV 13
Platinum
Best

Save 5% with Auto Delivery

Made in the USA

Ships in 24 Hours

Reviews for 21x21x1 MERV 8 Pleated Air Filter

157 Reviews

0 Questions \ 0 Answers

ask a question

write a review

ask a question

write a review

Thank you for posting a review!

We value your input. Share your review so everyone else can enjoy it too.

Thank you for posting a review!

Your review was sent successfully and is now waiting for our staff to publish it.

Thank you for posting a question!

Please click on the link in the confirmation email we just sent you to submit your question.

Your question will appear on the site once someone answers it.

Reviews(157)
Questions(0)

Updating Results

05/24/22

Chris F.

01/13/22

Super fast shipping great product

Super fast shipping great product will buy again.

Thank you !

Faith H.

12/30/21

Shipping was really fast I

Shipping was really fast I just used my last filter. Within 30 days I hope to use these new ones! They look awesome!

Dolores C.

12/11/21

A/C Filters

Very pleased with my A/C filter order. I will continue with your company.
Thank You!!!
Dolores Colonese

Katherine H.

12/06/21

Thank you! Fast shipping and

Thank you! Fast shipping and excellent product.

Duane K.

12/04/21

nk you for the box

nk you for the box of replacement filters. Luckily I came home in daylight and saw the box over beside my garage. I immediately brought them in. I am amazed that Fed Ex drivers don't deliver to my covered doorway, but at least I didn't get a box of rainwater this time. My garage is right by the street so the driver caan just toss the box out of the truck.

Save 5% with Subscription

Reviews for 21x21x1 MERV 8 Pleated Air Filter

WRITE A REVIEW

ASK A QUESTION