Established in Istanbul in 2003, TTAF (TTAF; advanced technology connectors, cable grouping, specialized in professional network, fiber optic solution applications and products A company that has gained trust and admiration both in Turkey and around the world with the solutions it has developed. is an institution.

Both these sizes should be on your filter or heating/cooling system. Can't find them? Best to grab a tape measure and check. If you don’t have an existing filter to measure, simply measure your return vent.

In comparison to fiberglass filters, 16x24x4 pleated air filters are at least 20 times more effective. All Filter King air filters are made in the US.

Filters frames are made out of heat resistant paperboard with horizontal grid supports. Able to withstand temperatures of up to 200° F and resistant to moisture, the paperboard frames do not support microbial growth and outperforms traditional cardboard frames.

Did you find a filter? Great! Just double-check that the actual size listed on our site matches your needs. If it's super close, you're good to go.

Too Small? The air might sneak around the edges of the filter, causing noise and letting dust and other tiny bits float around your home.

Filter King AC & furnace filters aren’t the typical fiberglass filters that need to be replaced every 30 days. Our filters can typically be used for 3 to 5 months before requiring to be changed. Naturally, a variety of things influence filter lifespan.

Think of it like this: a filter might say 20x20x1 inches – that's the nominal size. But in reality (actual size), it might be a bit smaller - 19.5x19.5x0.75.

Item Model Number: FKFB16X24X4 Brand: Filter King Filter size: 16x24x4 Actual Size: 15.5 x 23.5 x 3.75 4-Inch Filter MERV 8 Filter Rating Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses Residential / Commercial Use

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If you're still scratching your head about sizes, just give us a shout or send us an email. We're here to help make sure you get the right fit!

Chemical free, electrostatically charged synthetic polyester media is pleated, maximizing the surface area, to capture a high number of airborne particles as small as 0.3 microns with low air flow resistance. To increase durability, the media is supported with a corrosion resistant steel wire.

Item Model Number: FKFD16X24X4 Brand: Filter King Filter size: 16x24x4 Actual Size: 15.5 x 23.5 x 3.75 4-Inch Filter MERV 13 Filter Rating Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses Residential / Commercial Use

Item Model Number: FKFA16X24X4 Brand: Filter King Filter size: 16x24x4 Actual Size: 15.5 x 23.5 x 3.75 4-Inch Filter MERV 11 Filter Rating Protection From: Pollen, Dust, Mold, Dust Mites, Bacteria, Pet Dander, Smoke, Viruses Residential / Commercial Use

Some of the factors that influence your filter’s life include outdoor air quality, whether pets are in the home, and how well your HVAC system is maintained.

Your air filter becomes clogged over time by trapped particles, preventing airflow. The efficiency of the HVAC filter declines. Your system must work harder to heat and cool your home. The extra strain on the HVAC system causes higher energy bills. Regular home air filter replacements can prevent expensive system repairs or replacements down the road.