Air Filter API for Resellers

Connect your store and sell Filter King filters on your website using our drop shipping air filter API.

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Full catalog, no inventory

Sell 1,000,000+ filter variants without holding stock

Custom size order flow

Order custom filters with automated order flow

Instant price quoting

Always show accurate, price & stock data in your store

Fast delivery across USA

Four fulfillment centers mean most orders arrive in 1-2 days

Sell air filters on your website — we handle the rest

Your store, our catalog

Fill your store with over 1,000,000 air filter variations and let your customers order custom size filters with automated order flow - all connected to your website through a simple REST API. No inventory required!

Made & shipped from the USA

All filters are made in the US and ship from one of four fulfillment centers across the country. Your customers get a quality American-made product delivered fast — and you get a fulfillment partner you can rely on.

Drop ship air filters with no minimums

Air filters are a high-demand, repeat-purchase product. Add them to your store using our air filter drop shipping API and start selling without risk, inventory, and no overhead costs.

Ready to integrate FilterKing?

Access real-time product data, automate your order flow, and start selling air filters on your website today.

Apply

What can you do with the Filter King API?

1. Automate order processing

Connect your store to Filter King and send orders automatically through the API. No manual handling, no double data entry — just seamless order flow.
2. Instant price & stock info

Display Filter King's full catalog and offer custom filters with real-time price quoting, specifications, and stock availability.
3. Let us handle logistics

We manage stock, packing, and shipping directly to your customer. You stay focused on sales - we take care of the rest.

Why partner with Filter King?

Made in the USA

Every filter is manufactured and assembled in the United States.

Durable & long-lasting

High-quality materials deliver reliable performance and a longer service life.

Over 1,000 sizes available

From standard to hard-to-find dimensions, Filter King stocks a size for every customer.

Guaranteed to fit

Every filter is manufactured to precise dimensions and backed by a 30-day money-back guarantee.

Fast, reliable fulfillment

Four fulfillment centers across the US ensure most orders arrive within 1-2 days.

Simple API integration

Our REST API connects cleanly to any modern platform with clear documentation and code examples.

Explore our API documentation

Access detailed endpoint references, authentication instructions, and real integration examples to get started quickly.

See documentation

Nationwide fulfillment, fast delivery

Four fulfillment centers across the US ensure orders are processed and shipped quickly — so your customers get their filters fast

Ready to start selling?

Apply for API access and start selling air filters on your website in days.