I don't know the answer for his particular filter material, but washing was not recommended for other carbon filter pads I used in the past.

Fresh Headquarters Cut‑to‑Fit Carbon Pad Pre‑Filter Roll – Universal Activated Carbon Sheet for Air Purifier, Furnace, AC, Range Hood, 3D Printer & More Odor/VOC Control

Fresh Headquarters Cut‑to‑Fit Carbon Pad Pre‑Filter Roll – Universal Activated Carbon Sheet for Air Purifier, Furnace, AC, Range Hood, 3D Printer & More Odor/VOC Control

Q: Can I use this filter for mask(face mask) liner?

Because of the micron size of viruses, only very specific masks have any chance of filtering them out-and even those ones HAVE to be professionally fitted to have any efficacy (like the N95-which even when professionally fitted and used properly only stops 95% of virus micron size) and MUST be worn under very strict guidelines otherwise it offers no more virus protection than the cloth and surgical masks- which do not do not stop virus micron size from getting thru at all. To actually stop virus micron size you will either have to invest in a professionally fitted N95 and strictly follow the wearing protocol or to purchase a professionally rated respirator that guarantees to filter micron size of 0.01 or under (such as what virologists use in labs). Do not forget that viruses enter thru mucous membranes and so eye protection (such as goggles) will also be a MUST if you want to be truly protected from anything with a virus micron size. Hope this helps!

Q: It says it's 1/4 inch thick in the picture and 1/16 in thick in the description, which is it?

1/16th, but can be doubled, tripled, or quadrupled, etc., in thickness.

Q: Can this be put inside the air opening of a window AC unit to block out the light that comes through the vent?

I would rate its opacity to approx. 70%-80% (when clean and new). Remember, this is designed to trap small dust particles. As it does its job, it will become more opaque as well as not pass air efficiently.

4.5/5

Product ID: 46216302

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Details

Brand
FRESH
Material
Activated
Product Dimensions
48"L x 16"W x
Compatible Devices
Air Purifier
UPC
761315314045
Number of Items
1

✂️Cut-to-fit 16"x48" sheet

🛡️3/16" thick activated carbon layer

🇺🇸Proudly made in the USA

Frequently Bought Together

Cut to Fit Carbon Pad Pre Filter Roll, Universal for Air Purifiers, Furnace, Air Conditioner Filters, Range Hood, 3D Printers, and More

Breathe Naturally Universal Cut to Fit Carbon Activated Air Filter - Replacement Charcoal Filters - Pre Filter Carbon Sheet for Air Purifier, Vent Filters & More - Made in USA (Pack of 1, 16x48)

Description

🌬️ Breathe Better, Live Smarter — The Ultimate Custom Carbon Filter

CUSTOM FIT ZERO WASTE - Cut the large carbon sheet to perfectly fit any air purifier or vent—no more buying multiple filters.
UNIVERSAL COMPATIBILITY - Works seamlessly with top brands like Honeywell and Whirlpool, plus ACs, furnaces, range hoods, and more.
QUICK EASY INSTALLATION - Replace your pre-filter in minutes and instantly upgrade your indoor air quality without hassle.
POWERFUL ODOR VOC DEFENSE - 3/16" activated carbon thickness traps smoke, pet hair, dust, and household odors for fresher air.
MADE IN THE USA TRUSTED QUALITY - Crafted domestically to ensure premium filtration performance and support local manufacturing.

Fresh Headquarters Cut-to-Fit Carbon Pad is a versatile 3/16" thick activated carbon filter sheet (16"x48") designed for universal use across air purifiers, HVAC systems, range hoods, and more. Made in the USA, it offers customizable sizing, superior odor and VOC control, and compatibility with major brands, delivering cleaner, fresher indoor air with easy installation.

Specifications

Brand Name	FRESH HEADQUARTERS
Model Info	14207192
Item Weight	3.52 ounces
Product Dimensions	18.9 x 6.3 x 0.1 inches
Country of Origin	USA
Item model number	14207192
Is Discontinued By Manufacturer	No
Part Number	14207192
Compatible Device	Air Purifier, Compost Bin, Air Conditioner, Furnace
Material Type	Activated Carbon
Batteries Included?	No
Batteries Required?	No

Have a Question? See What Others Asked

Can I use this filter for mask(face mask) liner?

It says it's 1/4 inch thick in the picture and 1/16 in thick in the description, which is it?

Can this be put inside the air opening of a window AC unit to block out the light that comes through the vent?

Can i wash it?

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Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

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