About Mainstream Air Filters

Resources / FAQ

My Account

Air Filters - HVAC Filters - Furnace Filters - A/C Filters

All Air Filters

Browse our extensive catalog of hand selected air filters!

Product Filters

Filtered (182)
Filters
Search
Size
Brand
Thickness
MERV
Show (182)
Cancel
Nordic Pure, 12x30x1, pleated, MERV 8, air filter.

Nordic Pure 12x30x1

Size: 12x30x1

MERV: 8

Case: 3 / 6

$67.49 – $92.99

VIEW PRODUCT
Nordic Pure, 12x24x1, pleated, MERV 8, air filter.

Nordic Pure 12x24x1

Size: 12x24x1

MERV: 8

Case: 6 / 12 / 24

$73.99 – $178.99

VIEW PRODUCT
Nordic Pure, 12x20x1, pleated, MERV 8, air filter.

Nordic Pure 12x20x1

Size: 12x20x1

MERV: 8

Case: 6 / 12 / 24

$70.99 – $195.99

VIEW PRODUCT
Nordic Pure, 12x18x1, pleated, MERV 8, air filter.

Nordic Pure 12x18x1

Size: 12x18x1

MERV: 8

Case: 6 / 12 / 24

$76.99 – $215.99

VIEW PRODUCT
Nordic Pure, 12x12x1, pleated, MERV 8, air filter.

Nordic Pure 12x12x1

Size: 12x12x1

MERV: 8

Case: 6 / 12 / 24

$71.99 – $189.99

VIEW PRODUCT
Nordic Pure, 10x24x1, pleated, MERV 8, air filter.

Nordic Pure 10x24x1

Size: 10x24x1

MERV: 8

Case: 6 / 12 / 24

$85.99 – $259.99

VIEW PRODUCT
Nordic Pure, 10x20x2, pleated, MERV 8, air filter.

Nordic Pure 10x20x2

Size: 10x20x2

MERV: 8

Case: 3

$59.95

VIEW PRODUCT
Honeywell Air Filters - Return Grille FC40R1078 - 24x24x3

Honeywell FC40R1078 Return Grille

Size: 24x24x3

MERV: 10

Case: 2

$182.30

VIEW PRODUCT
Honeywell Air Filters - Return Grille FC40R1029 - 20x30x3

Honeywell FC40R1029 Return Grille

Size: 20x30x3

MERV: 10

Case: 2

$182.30

VIEW PRODUCT

Contact Us

Phone
Email

Company Policy

About Mainstream Air Filters

Refund & Return Policy

Privacy Policy

Services

HVAC Contractors

Filter Subscription

Knowledge Center

Resources / FAQ

© 2025 All rights reserved

Made with Elementor​