Why does the ad say to change these filters every 18 days?? i thought they were good for a month?!

They are good for a month. Even after that they still look new and clean.

Is it safe to use this type of filter for DIY face masks?

Yes, it can be used for DIY. Our product has five layers of filter elements, you can refer to the video.

How often do you need to change the filters?

Filters should be changed once a month.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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20-Pack CPAP Filters Compatible with ResMed Airsense 10 Universal Replacement Filter Fits Aircurve10/Airstart/ S9 Series CPAP Machines

Product ID: 67928081

🔄20-pack for year-round replacement

🛏️Compatible with ResMed Airsense10 & S9

🛡️4-layer ultra-fine fiber filtration

$18.51

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💨 Breathe Better, Sleep Smarter — Upgrade Your CPAP Experience Today!

YEAR LONG FRESHNESS - With 20 disposable filters included, maintain optimal CPAP performance by replacing every 18 days—no compromises on clean air.
SLEEP QUALITY BOOSTER - Enhance your respiratory health and reduce sleep apnea symptoms by breathing cleaner, fresher air every night.
EFFORTLESS MAINTENANCE - Simple filter swaps keep your CPAP running quietly and efficiently, ensuring peaceful nights for you and your loved ones.
SEAMLESS COMPATIBILITY - Designed to fit ResMed Airsense10, Aircurve10, Airstart 10, and S9 series machines perfectly for hassle-free replacements.
QUADRUPLE LAYER DEFENSE - Experience superior air purity with 4-layer ultra-fine fiber cotton filtration that blocks dust, pollen, and fine particles.

This 20-pack of premium disposable CPAP filters offers universal compatibility with ResMed Airsense10, Aircurve10, Airstart 10, and S9 series machines. Featuring a superior 4-layer ultra-fine fiber cotton design, these filters effectively trap dust, pollen, and fine particles to ensure clean, hygienic air. Designed for easy replacement every 18 days, this pack provides a full year of fresh filters, promoting better sleep quality and respiratory health.

Specifications

ASIN	B07DMGMC54
Best Sellers Rank	#89,362 in Health & Household ( See Top 100 in Health & Household ) #628 in CPAP Accessories
Customer Reviews	4.6 4.6 out of 5 stars (2,146)
Date First Available	June 8, 2018
Is Discontinued By Manufacturer	No
Item model number	BD9940
Manufacturer	Zeker
Package Dimensions	3.82 x 2.56 x 0.91 inches; 3.53 ounces

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$18.51

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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

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