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CYBER SAVINGS: NIOSH-Approved N99 Masks for less than 60 cents! Get them now!

  • Mask shown next to product packaging. Just $140 for a case of 240 masks AND free shipping!
  • Outside of mask.
  • Inside of mask
  • Dimensional picture. Weight 0.45 oz, 5" h x 6" l.

N99 NIOSH-Approved Particulate Respirators w/ Exhalation Valve, 12/pkg

Item #: 11155

Normal Availability: 1 business day

Product Description


For BAL Supply NIOSH N99's without valves see item # 11158.  BAL Supply valved NIOSH N95 (item # 11157) as well as valveless NIOSH N95's (item # 11156) are also available. We also have PHG's US-made NIOSH-approved N95's in stock (see item # 11165).


Yes, our best-selling NIOSH-approved N99 protection at prices you won't find anywhere else, pandemic or not!  For volume/pallet orders please contact us by email or phone.

On July 18, 2021 former FDA head Scott Gottlieb stated "Quality of mask is going to make a difference with a variant that spreads more aggressively like Delta does, where people are more contagious and exude more virus," he said "Trying to get N95 masks into the hands of vulnerable individuals in places where this is really epidemic I think is going to be important, even in cases where they're vaccinated, if they want to add another layer of protection."

Bielcor® 's B300 advanced particulate filtering N99 dust masks are NIOSH-approved (approval number 84A-3907) and are designed to protect the wearer against non-oil-based particles as small as 0.3 microns, while still allowing the user full, deep breaths of clean, fresh air. Each has a flexible, adjustable metal nose piece that can be bent or shaped to ideally fit the user's face. The exhalation valve reduces excessive dampness and warmth in the mask from exhaled breath, making long-term wear much more comfortable. The flexible head strap allows the user to don and remove the mask with ease. These are readily compatible with other Personal Protective Equipment (PPE) such as safety glasses, goggles, earmuffs, and hardhats and the straps are latex-free.

These masks are ideal for protection against small particulates such as saw dust, drywall dust, metal shavings, pollen, allergens, fiberglass, and more. They are ideal for activities such as woodworking, insulating, or painting at home as well as by professional carpenters, contractors, or lawn care specialists.  N99 filtering respirators are even more efficient than N95 respirators, filtering at least 99% of airborne particles. These are not resistant to oil.  NIOSH has a convenient discussion of particulate filtering respirator classifications on their web site. 

Technical Note 1: The US Centers For Disease Control and Prevention (CDC) issued guidance regarding valved masks for source control early in the pandemic. NIOSH has since released a study finding that valved masks can be more effective than surgical masks or cloth face coverings for source control. An earlier CDC FAQ question about using respirators with an exhalation valve notes that one can use a surgical mask over such valves where exhalation is a concern. 

Technical Note 2: Respirators with KN designations such as KN95 are not NIOSH-approved and the market for KN95's is fraught with substandard and counterfeit products and  should be considered only when approved alternatives are unavailable. A study by ECRI determined that up up to 70% of  imported non-NIOSH certified respirators exhibit filtration performance "significantly inferior" to NIOSH-certified N95's.

Technical Note 3: The US FDA no longer authorizes the use of non-NIOSH approved disposable respirators, and now recommends that healthcare providers revert to standard best practices of wearing a a disposable respirator for each patient contact.

Technical Note 4:  Bielcor® is an Arizona-based company that has been operating in the US occupational respiratory market for more than two years. These masks are manufactured by Taiwan-based Jinfuyu Industrial Co, Ltd which holds the NIOSH approval and has factories in both China and Vietnam. These masks have an expiration date of August 2023.

Technical Note 5: When molding the nosepiece on any respirator, use both hands to mold that to your nose. If you use just the thumb and forefinger of one hand you are likely to create a little valley that is hard to seal perfectly.

Tax tip! The Internal Revenue Service has stated that the purchase of personal protective equipment (PPE), such as masks, hand sanitizer and sanitizing wipes, for the primary purpose of preventing the spread of coronavirus are deductible medical expenses.  They are also eligible for reimbursement under health flexible spending accounts such as FSA's and HSA's.

Case dimensions: 26" x 18" x 11" (66.0 x 45.7 x 27.9 cm), 14 lb (6.35 kg).


Other Details

Manufactured in: Vietnam

Product Reviews

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  1. Rip Off 1 Star Review

    Posted by on Aug 23rd 2020

    I see you only post the good reviews. If I am wrong than I expect to see my post.

    Don’t waste your money. After weeks of waiting they arrived and do not fit an adult. Unlike other vendors this outfit does not back their products with a guarantee for their customers.

    Safety Emporium responds:

    No, we post our reviews. You are wrong.

    As we informed this customer by email, we have sold over 10,000 boxes of this one-size fits most mask. While we have had several customers report that they found the mask too large, this was the first report from anyone that the masks are too *small*. The size is clearly shown in the product picture (6 inches wide x 5 inches high), which is comparable to other brands such as the 3M 8200 series of masks.

    We do not accept returns on PPE given hygienic and other issues too detailed to list here. We make this quite clear on the product page in bold red type. It is printed on the electronic order acknowledgment if you missed that. For other product lines we have a 30 day return policy on most items.


    Posted by on May 31st 2020

    The masks are genuine N99 NIOSH approved. We are EFR's / Rescue Divers with a small underwater rescue company and having high quality respirators when we are topside are vital to our crew. Thank you Safety Emporium for such great product.

  3. Great Product Great Service 5 Star Review

    Posted by on May 24th 2020

    It was great to be able to find these N99 mask for my small health center. Fast shipping, fair pricing and immediate response to emails and phone calls. Thanks and looking forward to ordering from again.

  4. Wonderful service and great product 5 Star Review

    Posted by on May 19th 2020

    We ordered these masks for a medical practice and they've been great. Slightly harder to breathe in than an N95, but that's to be expected, since this has a higher particulate filter count. Customer service was great, we explained that these masks were for medical use and they expedited the shipping. We're so thankful to have found a reliable company with fair pricing during the pandemic. Thanks Safety Emporium!

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