RAT BOI

FILTER REFILL

$5.50

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3 Pack
5 Pack
10 Pack

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Our breathable nanotechnology fabric filter has more than a 90% filtration efficiency. It has been tested with NaCl aerosol at inhalation flow rates of 95 liters/min and can block particles as small as 0.6 micrometers. Our filters help keep your masks more effective at filtering particles than the fabric alone.

PRODUCT DETAILS

Size: 4” x 5”

Filters are designed to be used with RAT BOI cloth mask alternatives but can also be used with your own masks you have created or purchased elsewhere to improve efficacy.

BEST USE

Insert filter into your RAT BOI or other cloth alternative mask. Note: filters can be cut with scissors if needed to fit other masks.

Make sure your filter is covering your nose and mouth portion of the mask.

All filters are designed to be disposable and should be refilled or sterilized using professional UV light treatment after each 10 hours of wear. This 10 hours can be broken up over several essential outings, but remember, like your standard N95 mask, filtration efficacy degrades over time.

Filters can not be laundered and should always be removed before laundering your mask.

RETURNS

All filters are considered personal items. For sanitation reasons, we are not accepting returns or refunds on any of our mask products.

LAB TESTING:

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WASHER/DRYER FRIENDLY

Masks are pre-shrunk so you can toss them in the washer and dryer. Wash your mask regularly to banish maskne causing bacteria and keep your mask feeling fresh. We offer mesh pouches for convenient laundering.Pro tip - press wrinkles out with iron as needed ;)

Laundry Pouches

NANOTECHNOLOGY FILTER

Each mask comes with a removable nanotechnology filter which has a 90% filtration efficacy and can filter 0.6 micrometers. Our filter provides that extra layer of protection that most cloth masks don't have. Filters should be replaced or UV sterilized after 10 hours of cumulative wear. Learn more about our filter material or shop for replacement filters á la carte.

FIlter Refill