American-made quality Factory-direct replacement filters Free shipping Bulk order savings

GreenLine Filter Co. / Direct filtration supply

American-made air filters, built for serious airflow.

Premium pleated replacement filters for homeowners, rentals, and small businesses that want a clean fit, dependable performance, and a direct-to-door buying process.

Nothing gets past the GreenLine.

Find your filter size Compare filtration levels

01Standard HVAC sizes

Built around common residential replacement filters.

02MERV 8 / MERV 13 / Charcoal

Simple choices for everyday, premium, and odor-focused filtration.

03Stock-up friendly

Order multiple filters and stay ready for routine replacement.

Start with size

Find your replacement filter.

Check the size printed on your current filter frame. It usually appears as width x length x depth, like 16 x 20 x 1.

Width Length Depth

Use the selector to jump to the size catalog below. Product links are generated by Shopify from your live catalog.

The GreenLine standard

A manufacturer-direct feel with a simple customer experience.

The site should feel technical enough to trust, clean enough to shop quickly, and premium enough to stand apart from generic marketplace filters.

01

Premium pleated media

Expanded surface area helps capture common airborne particles moving through your HVAC system.

02

Sturdy frame construction

Built to hold shape through normal residential filter replacement cycles.

03

Airflow-minded design

Made to filter effectively while helping air continue moving through the system.

04

Direct supply advantage

Clear sizing, free shipping, and bulk savings make routine replacement easier.

Choose your filtration level

One size. Three clean product choices.

Pick your size first, then choose the protection level that fits the home.

EverydayMERV 8

Essential Defense

Reliable routine filtration for dust, lint, and standard HVAC protection.

Most premiumMERV 13

Professional Defense

Higher-efficiency filtration for homes with pets, allergies, smoke concerns, or heavier dust.

Odor controlCharcoal

Odor Defense

Activated-charcoal filtration for unwanted household odors from pets, cooking, smoke, and stale air.

Shop the full size catalog.

Select the size printed on your current filter frame. Each product page is generated from your Shopify catalog, so customers stay on real product links instead of guessed URLs.

12 X 12 X 1 Air Filter

12 x 12 x 1 Air Filter

12 x 16 x 1 Air Filter

12 x 18 x 1 Air Filter

12 x 20 x 1 Air Filter

12 x 24 x 1 Air Filter

12 x 25 x 1 Air Filter

12 x 30 x 1 Air Filter

14 x 14 x 1 Air Filter

14 x 30 x 1 Air Filter

16 x 16 x 1 Air Filter

16 x 18 x 1 Air Filter

16 x 20 x 1 Air Filter

16 x 22 x 1 Air Filter

16 x 25 x 1 Air Filter

16 x 30 x 1 Air Filter

18 x 18 x 1 Air Filter

18 x 20 x 1 Air Filter

18 x 22 x 1 Air Filter

18 x 25 x 1 Air Filter

14 x 18 x 1 Air Filter

14 x 20 x 1 Air Filter

14 x 22 x 1 Air Filter

14 x 24 x 1 Air Filter

14 x 25 x 1 Air Filter

14 x 28 x 1 Air Filter

Built for routine replacement supply.

GreenLine should feel like a direct filtration source: dependable sizing, clear product choices, and a professional supply experience for homeowners, rentals, and light commercial buyers.

01

Factory-direct angle

A serious product presentation that feels closer to a manufacturer than a marketplace listing.

02

Clean size path

Customers start with dimensions first, then choose filtration level and quantity.

03

Stock-up behavior

The page encourages buying replacements ahead of schedule instead of waiting until the system is dirty.

04

Premium confidence

Professional language, strong visuals, and clear proof points create a higher-end brand impression.

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