Why should I change my air filter?

To maintain a healthy lifestyle, as breathing dirty air can put you at risk to develop asthma, allergies, and other respiratory ailments. Plus, old filters can cause system defects which may lead to unwanted expenses via energy costs and repairs.

When should I change my air filter?

We generally recommend replacing your filter every 90 days to keep your system running efficiently and air clean. But this is subject to change based on filter size and variable factors for pet owners, allergy sufferers, homes with children, etc.

Will these air filters fit my system?

Most of our filters are universally compatible and will work with any furnace, air conditioner, heat pump, or HVAC system as long as you choose the proper size. But if you see a specific brand name on a listing, make sure it matches your unit model.

How many air filters do I need?

This varies for every customer depending on specific needs such as the number of vents in your home. However, our selection includes package quantities that range from 1 to 12 filters, so no matter what your situation may be, we've got you covered.

How do I change my air filter?

After finding the right size, turn off the power supply and remove the cover from your intake vent before taking out the old filter. Then just insert your new filter to match the direction of air flow, replace the cover, and turn the power back on.

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Filterbuy 20x20x1 Air Filter MERV 8 Dust & Allergy Defense (4-Pack)

Product ID: 28844307

Details

Brand
Filterbuy
Compatible Devices
Air Cleaner
Filter Mounting Type
Slide In
Filter Shape
Square
Global Trade Identification Number
Item Weight
1.8 pounds

📏Precise 19.5x19.5x0.75" fit

♻️Durable, recyclable USA-made frame

🛡️MERV 8 blocks 90% dust & allergens

R4399

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Description

🌬️ Breathe smarter, live better — upgrade your air game now!

PROUDLY MADE IN THE USA - Crafted with industrial-grade recyclable materials, trusted by millions for healthier homes and offices.
TRIPLE LONGEVITY PLEATS - 14 pleats per foot with electrostatic charge last 3x longer than fiberglass filters—replace only every 90 days.
BUILT TO ENDURE PERFORM - Robust beverage board frame with dual wire backing resists warping and extreme temps for reliable airflow.
ADVANCED MERV 8 FILTRATION - Captures 90% of airborne particles like pollen, mold, and lint to elevate your indoor air quality.
UNIVERSAL FIT ZERO HASSLE - Fits all standard 20x20x1 HVAC systems for seamless replacement.

Filterbuy’s 20x20x1 MERV 8 air filters deliver superior dust and allergen defense with electrostatically charged pleated media that traps 90% of particles. Designed for universal HVAC compatibility, these durable, recyclable filters last three times longer than standard fiberglass models. Proudly made in the USA, they ensure consistent airflow and enhanced indoor air quality for homes and businesses alike.

Specifications

ASIN	B00CJZ8LAK
Air Filter Construction	Pleated
Best Sellers Rank	#6 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Furnace Filters
Brand Name	Filterbuy
Common Applications	Allergen Reduction, High Strength
Compatible Devices	Air Cleaner, Air Conditioner, Furnace, HVAC System, Heat Pump
Compatible Hvac Systems	Commercial, Industrial, Residential
Customer Reviews	4.7 4.7 out of 5 stars (154,433)
Filter Airflow Direction	Variable
Filter Mounting Type	Slide In
Filter Shape	Square
Global Trade Identification Number	00717267051675
Included Components	Air Filters
Item Dimensions L x W x Thickness	19.5"L x 19.5"W x 0.75"Th
Item Highlight	Electrostatic Pleated HVAC AC Furnace Filters Replacement, Made in USA (Actual Size: 19.50 x 19.50 x 0.75)
Item Type Name	Air Filter
Item Weight	1.8 pounds
MERV Rating	8
Manufacturer	Filterbuy
Manufacturer Part Number	AFB20x20x1M8pk4
Material Type	Aluminum, Plastic, Polypropylene
Max Temperature	200 °F
Max Velocity	615 cfm
Model Number	AFB20x20x1M8pk4
Number of Items	1
Number of Packs	1
Product Grade	Replacement Parts
UPC	717267051675
Unit Count	4 Count
Warranty Description	Defective items and products that were shipped incorrectly are subject to a refund or replacement on a case by case basis. Please contact our customer support team for more information if you experience any issues.

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

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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I loved the variety of products available. Will definitely shop again.

2 months ago

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R4399

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

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

2 weeks ago

Anjali K.

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

1 month ago

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