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 (128)
Filters
Search
Size
Brand
Thickness
MERV
Show (128)
Cancel
Glasfloss, 20x20x1, Disposable, Replacement Air Filters. Great for Economical Air Filtration.

Glasfloss GDS 20x20x1 (Case of 12)

Size: 20x20x1

MERV: 5

Case: 12

$74.90

VIEW PRODUCT
Nordic Pure, 20x20x1, pleated, MERV 8, air filter.

Nordic Pure 20x20x1

Size: 20x20x1

MERV: 8

Case: 6 / 12 / 24

$74.49 – $199.49

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​