Details
The Castle Case offers an eco-friendly protective enclosure that will significantly extend the shelf life of your CastleGrade mask from 2 years to 3 years. The case is made from 100% stainless steel making it extremely durable and long lasting with proper care. The case will keep your mask and filters sanitary while traveling or at home. It fits all sizes of CastleGrade masks and can even be used as storage for other masks or face coverings you may own.
• Safely Store Any Mask During Travel and At Home
• Keeps Mask and Filters Sanitary and Germ Free
• Increases CastleGrade Mask Shelf Life
• Dishwasher-safe and Easy to Clean
• Eco-friendly / Plastic-free
• Holds Two Extra Filter Packs
• Easily Connect to Your Backpack for on the Go
• 100% Stainless Steel, Will Last A Long Time with Proper Care
• Case is Recyclable at End of Life
• Carabiner is Aluminum, Recyclable at End of Life
• Each Rainbow Case Has A Unique Color Pattern
PRODUCT SPECIFICATIONS
Dimensions: 5.4 in x 5.4 in x 2.7 in
Weight: 6.9 oz
Cleaning: Dishwash, Disinfectant Wipe or Spray and Wipe, Boil in Water
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
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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. (N95 Masks are 95% BFE)
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 respirator mask unfit for use by another customer. Thank you for understanding.