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.

Cut to FitカーボンパッドPre Filter for Air Purifiers

Cut to FitカーボンパッドPre Filter for Air Purifiers

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.

4.4/5

Product ID: 740088857

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Details

Brand
FRESH
Material
カーボンファイバー
Compatible Devices
ファーネス
UPC
761315314045
Number of Items
1
Manufacturer
Fresh

🖤Activated carbon filtration

✂️Custom cut-to-fit design

🌬️Ultra-thin 1/16 inch profile

Frequently Bought Together

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

UBeesize Air Vent Filters, 120" x 12" Cut to Size Air Filter Material (50+ Filters), MERV 8 Triple Vent Filter Kit for Home Floor, Grilles, Ceiling, HVAC Furnace Vents, With 48PCs Adhesive Hook Tape

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

✂️🖤 Cut to Fit, Breathe Elite: Your air’s new best friend.

VERSATILE COMPATIBILITY - Works with Honeywell, Whirlpool, Winix, HEPA, and many more leading brands.
LIGHTWEIGHT ULTRA THIN - At just 1/16 inch thick and 100g, it won’t bulk up your device or reduce airflow.
TAILORED FIT EVERY TIME - Cut precisely to fit any air purifier or vent for seamless integration.
POWERFUL ODOR VOC REMOVAL - Activated carbon traps household chemicals, benzene, and VOCs for fresher air.
MULTI PURPOSE AIR QUALITY BOOSTER - Ideal for air purifiers, range hoods, humidifiers, vents, and furnace filters.

This 16x48 inch activated carbon pre-filter is designed to be custom-cut for universal fit across major air purifier brands. Its ultra-thin 1/16 inch profile efficiently removes dust, pet hair, smoke, and harmful VOCs like benzene, ensuring fresher, cleaner air without compromising airflow or device performance.

Specifications

Size	16" x 48" x 0.2"
Manufacturer	Fresh Headquarters
Material	カーボンファイバー
Product Dimensions	48 x 16 x 0.25 cm; 100 g
Package Weight	0.1 Kilograms
Batteries Required	No
Batteries Included	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?

Common Questions

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The product quality is outstanding. Exactly what I needed for my work.

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