Are these required when changing the filter? What is it's purpose?

This is the black carbon filter that comes attached to the HEPA filters you buy. It is what collects a lot of physical dust and things and keeps the HEPA filter (which is much more expensive) lasting longer. I can usually change this carbon filter out twice for every HEPA filter change out.

how do you install these do you attach to the orginal filter via the velcrow?

Do I put it in the front or back of the filter holder? I read it can be done either way. Had it in the back, then front. My fish aquarium back and the fish are healthy.

Do you have to buy these as well as the hepa filters or will the hepa filters alone be sufficient?

I use both. I change these pre-filters every month, which I find to extend the life of the hepa filters. There are smokers in my house, I run my unit 24 x 7, and when I change the pre-filters I was amazed at how filthy they were. Hope this helps answer your question...

Removed old filter. Light is still flashing red after new filter replacement. Anyone else having this issue??

On the top of my GermGuardian it says to hold the UV light button for 5 seconds to reset the filter light.

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

Help Track order

Account Cart

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

Help Track order

Account Cart

CFS – 4.8" x 15.75" Activated Carbon Pre-Filters Compatible with GermGuardian FLT4825 HEPA Filter and AC4800 Series (Filter B) – Removes Odor, Smoke & VOCs – Replacement Pre-Filter – 4 Pack

Product ID: 22448923

Details

Color
Black
Brand
CFS
Product Dimensions
2.8"D x 4.8"W
Floor Area
1.0
Controller Type
Touch Control

⏳Months-long reliable use

⚙️Universal fit across 12+ models

🛡️99.97% pollutant capture

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

$35.18

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

Description

🌬️ Breathe Brilliance: Elevate your air, elevate your life.

VERSATILE DIY FRIENDLY - Customizable carbon sheets adapt to various air vents and projects, enhancing whole-home air quality.
ELITE HEPA FILTRATION POWER - Captures 99.97% of microscopic pollutants down to 0.1 microns, including wildfire smoke and odors.
DURABLE ACTIVATED CARBON LAYER - Premium mesh and stretch fabric ensure long-lasting odor control without compromising airflow.
PRECISION FIT FOR TOP AIR PURIFIERS - Seamlessly compatible with 12+ GermGuardian & PureGuardian models for hassle-free replacement.
EFFORTLESS INSTALLATION MAINTENANCE - Quick, tool-free filter swaps keep your air fresh without interrupting your busy lifestyle.

The FLT4825 HEPA Filter B Replacement is a high-efficiency air purifier filter compatible with over a dozen GermGuardian and PureGuardian models. Engineered to trap 99.97% of airborne particles as small as 0.1 microns—including dust, pollen, pet dander, and wildfire smoke—this filter ensures consistently clean, odor-free air. Its durable activated carbon pad and easy installation make it a reliable, long-lasting upgrade for maintaining optimal indoor air quality.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.