G-Series Mask
Reusable Mask
Each mask comes with:
1 Head Strap, Ear Straps, 5 Filters
Regular price
$44.99
Unit price
per
All sales are final.
Details
The CastleGrade™ G-Series Masks are reusable respirator masks designed for everyday use. The base of the mask is made from a lightweight silicone that forms to your face, leaving no marks and a tight seal. Each mask comes with five replaceable 4-ply filters. Each filter can be used for up to 32 hours of direct use or one week, whichever comes first.
No valve or vent - two way filtration
Sizing Note: 70% of customers prefer the G9 (Medium - Large) size
Product Features
Disclaimer: In no event shall CastleGrade™ be liable for any direct, indirect, punitive, incidental, special consequential damages, to property or life, whatsoever arising out of or connected with the use or misuse of our products.
Please Note: No respirator can protect 100% against COVID-19 or other viruses. COVID-19 is not yet fully understood. We cannot and do not guarantee that our respirators will protect you against the Coronavirus.
Video Tutorials
How to Use Your Mask
Watch our video on the proper way to put on and fit your mask.
How to Insert the Filter
Click to see the correct way to place the filter in the mask.
Removing the Filter Cover
Watch this video on the right way to remove the filter cover.
Attaching the Straps
Click to see the proper way to attach your mask straps.
Protects against Smoke
Charcoal Filters
Introducing our activated carbon filters that aid in removing toxins from smoke and fumes. These 4-ply filters have been lab tested to show over 98% filtration efficiency with less than 1% particle penetration.
98% efficiency
Filters smoke
Activated Carbon
Learn More
Sizing Guide
Customers are loving the G-Series!
78%
of customers feel safer in the G-Series than in other masks
56%
of customers feel the mask is more comfortable than a standard mask
93%
of customers said reusability and eco-friendliness was a factor purchasing
Registrations
Official Registration
View Registration
Travel Compliance
Print Letter
Provisional Patent
U.S. Patent & Trademark Office-
CastleGrade makes superior masks that actually allow you to breathe comfortably and if you wear glasses they do not “fog up”.
Martha Stewart
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"I received the G-Series. This will be the new standard for the medical industry. It feels like you are wearing a cloud compared to the other masks out there that leave us with daily damage to our skin."
Dr. Lauren Becker DDS
Get More Filters
Entrepreneur and business owner Anna Grinvald invented an earlier version of the G-Series in December. Anna’s mother lives in a senior care center in Israel and complained about how typical masks were fogging up her glasses. Ron Grinvald, a former injection mold specialist for several parts on the NASA spacesuit worked with Anna and eventually Dan Castle, owner of Castle Brand Group to improve it. The G-Series has recently been tested by the FDA, Nelson Labs, Alpha Labs and SMQ Labs and has performed extraordinarily well.
Yes, click here to view our registration on the official FDA website.
The G-Series filter has been lab tested by several third-party labs. Results from these tests have shown a level of filtration efficiency over 95% consistently, with Nelson Labs performing the Bacterial Filtration Efficiency (BFE) test which returned a 99.8% efficiency score.
The G-Series Mask has been tested by several third party labs. Please click on the Science tab to learn more.
As a standard, we recommend purchasing the G9 size. The G8 size is recommended for teenagers and women with small head and face features (70pct of women prefer G9).
Remove the 4-ply filter and place it in the dishwasher. You can also submerge it in boiling water for 2 seconds. If you prefer to keep it clean throughout the day you can wipe it down with any disinfectant.
You can wear the mask for up to 1 week or 32 hours of direct use, before replacing the filter.
Wearing a high protective, silicone mask will slightly alter / muffle the sound of your voice.
We manufacture in several countries including Vietnam, Czech Republic, Germany and China.
Don’t! Keep the mask and buy replacement filters on our website when you are running low or sign up for the subscription so you never run out. We cringe seeing so many masks being discarded after just one day of usage and Mother Nature needs your help.
For safety purposes, once the product has shipped, we consider the mask unfit for use by another customer. Thank you for understanding.