Which RZ Filter is best for me?

We like to say RZ Filters are the muscle behind the mask. Both the F1 Standard + active carbon filter that comes in all RZ Masks as well as the F3 High Airflow + active carbon filter provide up to 99% filtration from airborne particulates down to .1 micron.

That means both filters offer a high level of protection while reducing odors while you work. Read on for more information to help you decide the best go-to replaceable mask filter for woodworking, DIY, demo, landscaping, and more.

F1 filters vs. F3 filters


The F1 Standard filter offers up to 99.9% filtration down to .1 micron plus active carbon for odor reduction. Featuring four layers of protection, this is our most economical filter that packs a powerful punch of protection. This filter is effective towards dust, fumes, odors, smoke, allergens, organic chemicals, and more.

F1 Standard filters come in 3-pack or 12-pack sizes.


The F3 Filter features five layers of protection, integrating a layer of electrostatic technology which allows for up to 50% better breathability than the standard F1 Filter. Filtering up to 99% of airborne particulates down to .1 micron, the F3 is recommended for long days of wear, demolition, landscaping, ATV riding, and any project where you’re active and improved breathability will help you feel better while you do what you love.

F3 High Airflow filters come in 3-pack or 12-pack sizes.

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Frequently Asked Questions

Our F1 and F3 active carbon filters are very effective towards certain fumes and odors. However, different products can contain varying ingredients that may require different levels of respiratory filtration. We always advise you to follow the manufacturer's safety instructions for the products you are using. RZ Mask should only be used with VOC free or water based products. RZ mask does not protect against toxic fumes.

Particulates: grinding, sweeping, sanding, bagging, mowing
Vapors and contaminants: painting, varnishing, pollution, mechanical work, public safety, medical use
Allergens: gardening, outdoor activities, animal grooming, landscaping

Our masks are not recommended for use against silica, asbestos, lead, arsenic, cadmium, 4,4-methylene (MDA), abrasive blasting or any other toxic and/or dangerous substances.

The life expectancy of your RZ Filter depends on many variables, such as; particulate exposure density, particulate exposure duration, and user breathing rate. Below are our general guidelines:

20-30 hours of continuous use in heavy dust exposure to things such as; grain bins, off-roading, construction/demolition, etc.

30-40 hours of continuous use in light dust exposure to things such as; grain bins, off-roading, construction/demolition, etc.

50-60 hours of continuous use when protecting against allergens, pollutants, odors, etc.

The filters can be replaced by turning the inside of each valve, counter-clockwise. Each filter is affixed in between the valves. Once removed, the old filter can be disposed, and the new filter can be placed in between the two valves. Turn the valves clockwise until they are tight.

Read more on our blog post, How to Change RZ Filters & Valves

Activated carbon has the ability to absorb almost any type of vapor, organic molecules, solvents, volatiles organic compounds (VOCs), odors, and a very wide variety of chemicals. It also has an extreme ability to catalytically destroy ozone; this is a major component of smog and other air pollution. Activated carbon works well under most temperatures and moisture contents, releasing the attracted moisture to absorb chemicals. This material is inert and safe for use and handling.

Read more on our blog post, What is Active Carbon?

How are we so confident in the performance of our products? RZ invests significant time and money into third-party testing, to independently validate the effectiveness of our masks and filters.

We chose the world-renowned Nelson Laboratories in Salt Lake City, Utah, to perform the testing of our products. Nelson Labs is known as the industry leader, employing over 500 scientists and staff – performing over 800 different laboratory tests. They serve a wide variety of customers, including medical device, pharmaceutical, and tissue companies. They were founded in 1985 by Dr. Jerry R. Nelson and Lynda S. Nelson, and have grown to 13 global testing sites as of 2020. Nelson Labs facilities are FDA-registered as a GMP, GLP, and GTP testing lab with ISO 17025 accreditation.

Read more about our testing process and standards, Testing Makes a Difference

According to latex particle challenge tests performed by the world renowned, Nelson Laboratories in Salt Lake City, RZ Mask's F1 and F3 Filters, filter 99.9% of all particulates to a size of .1 um.

F1 Standard + Active Carbon Filter:
Made with 2 layers of particulate filters
Outer layer filters particulates down to .1 micron in size
Inner Active Carbon layer effective towards fumes and odors
Laboratory tested to be 99.9% effective

Common uses: Low intensity, dust/fumes/odors/smoke/pollen

F3 High Airflow + Active Carbon Filter:
Made with 2 layers of particulate filters
Outer layer filters particulates down to .1 micron in size
Inner Active Carbon layer effective towards fumes and odors
Laboratory tested to be 99.9% effective
Promotes 50% better breathability than our standard F1 filter
The RZ F3 Filter is above general inhalation standards

Common uses: High intensity, Dust/pollen/smoke/fumes/odors

No, our filters are not washable.

We recommend replacing your filter for maximum breathing protection when the active carbon has been depleted or visually when the filter is dirty.

All our filter types block 99.9% of particulates down to .1 micron. This rate is known to be effective toward most airborne pathogens like Influenza and SARS.

Please be aware that our M1, M2, and M2.5 masks only filter the air being breathed in and not the air being breathed out. Because of this, they will only provide filtration for those wearing the mask. If you believe you have been infected, our masks will not protect those around you from the spread of infection. There are multiple ways the COVID-19 virus can be contracted, and we recommend following all prevention measures provided by the CDC and WHO.

If you are using our masks against airborne pathogens, the mask must be washed with a sterilizing soap and filter replaced after each wear in order to prevent exposure and spread.

CDC website:  https://www.cdc.gov/coronavirus/2019-ncov/index.html

WHO website:  https://www.who.int/health-topics/coronavirus

Currently, our F1 and F3 filters are not NIOSH rated.

Our masks/filters have been independently tested at Nelson Laboratories in Salt Lake City, UT and tested at 99.9% efficiency against particulates down to .1 microns is size.