100% Free U.S. Shipping

21x21x4 MERV 8 Pleated Air Filter

Name: 21x21x4 MERV 8 Pleated Air Filter
Brand: FilterBuy
SKU: AFB21x21x4M8
Availability: InStock
Rating: 4.91 (11 reviews)

Made in the USA

Ships in 24 Hours

Save 5% with Subscription

MERV 8 / Silver

Standard

3 Month Filter

21x21x4 MERV 8 filters made and manufactured by FilterBuy
Actual Size 20.5x20.5x3.75"
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!

Choose another Size

Other MERV Ratings Available

21x21x4
MERV 8
Silver
Standard

21x21x4
MERV 11
Gold
Superior

21x21x4
MERV 13
Platinum
Best

4 21x21x4 Air Filter for 30.41 each

Save 5% with Auto Delivery

Made in the USA

Ships in 24 Hours

Reviews for 21x21x4 MERV 8 Pleated Air Filter

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(12)
Questions(0)

Updating Results

11/27/20

Frank S.

10/20/20

Great Filters, great company to

Great Filters, great company to deal with. thank you.

andrew e.

12/26/19

Fast delivery and great filters!

Gilbert W.

08/06/18

Filters

Very happy with the product

Donna J.

01/31/17

Appreciate the ease in ordering.

Appreciate the ease in ordering. Thought I had an issue with the wrong size filter. Contacted immediately and received a very quick response and resolution. (It was my problem, not FilterBuy's.) Very reasonable prices as well. Will order again.

PAUL B.

05/13/15

I am happy with my

I am happy with my purchase and your companies service.

Save 5% with Subscription

Reviews for 21x21x4 MERV 8 Pleated Air Filter

WRITE A REVIEW

ASK A QUESTION