what filter fits perfect in the 4" filter box?

the 4" and 6" filters take 12x20x1" filters; the 8 and 10" box's take 14x20x1" filters

What filter replacement is suggested for the 6" filter box? standard 20x12x1 does not fit.

Different brands of filters have different "actual" sizes. Look up the true size of the filter you are using, then check actual filter sizes for different brands that are smaller.

Do the filters trap smoke from pipes or pollen and mildew?

No, you need a carbon filter for smoke

Can I use a MERV 17 or HEPA filter instead of a MEV13 filter for additional filtration if they will even fit?

I use the HDX FPR 12 Ultimate Allergen with odor reduction. This filter is a higher end filter.

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

AC Infinity Inline Filter Box with Merv 13 Filter, Whole House Hvac Filtration Kit (4in)

Product ID: 375478334

Details

Brand
AC Infinity
Compatible devices
CLOUDLINE S4
MERV rating
13
Material
Alloy Steel
Product dimensions
59.6L x 21.4W

🦠MERV 13 filter blocks viruses & pollen

🌬️400 CFM max airflow

🛡️1mm cold-rolled steel durability

E£ 63046

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered 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 EGYPT.

Secure transaction

Description

🌿 Elevate your air game — because your home deserves the cleanest breeze.

SEAMLESS INTEGRATION - Designed to fit 4-inch inline fans (like CLOUDLINE S4/T4) with a streamlined installation for optimal airflow up to 400 CFM.
EFFORTLESS MAINTENANCE - Slide-lock door with neoprene seal offers quick, dust-free filter swaps—no hassle, no mess.
BUILT TO BRAVE THE ELEMENTS - Rugged 1mm cold-rolled steel & aluminum flanges ensure weatherproof, long-lasting performance.
BREATHE CLEANER LIVE BETTER - High-efficiency MERV 13 filter traps microscopic particles like dust, pollen, mold spores, and viruses for healthier indoor air.
WHOLE HOME FRESHNESS UPGRADE - Ideal for residential HVAC systems, this filter box dramatically reduces airborne contaminants, creating a fresher, safer living environment.

The AC Infinity Inline Filter Box is a robust whole-house HVAC filtration solution featuring a durable 1mm cold-rolled steel body and aluminum flanges. It fits 4-inch inline fans and supports up to 400 CFM airflow. Equipped with a high-efficiency MERV 13 filter, it effectively captures particles as small as 0.3 microns, including dust, pollen, mold spores, and viruses. Its slide-lock door with a neoprene seal ensures easy, dust-free filter changes, making it a perfect upgrade for millennial professionals seeking cleaner, healthier indoor air with minimal maintenance.

Specifications

ASIN	B0921N33Y7
Best Sellers Rank	#108,498 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #50 in Furnace Filters
Brand Name	AC Infinity
Compatible Devices	CLOUDLINE S4, CLOUDLINE T4
Compatible Hvac Systems	residential
Customer Reviews	4.6 4.6 out of 5 stars (110)
Filter Mounting Type	Slide In
Filter Shape	Rectangular
Item Dimensions L x W x Thickness	59.6L x 21.4W x 29.8Th centimeters
Item Weight	6.42 Kilograms
MERV Rating	13
Manufacturer	AC Infinity
Manufacturer Part Number	AC-AFB
Material Type	Alloy Steel, Aluminum, Neoprene
Model Number	AC-AFB4
Number of Items	1
Number of Packs	1
Product Grade	new
UPC	819137021693
Unit Count	1 Count

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

Anjali K.

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

1 month ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month 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.

E£ 63046

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered 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 EGYPT.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

View all Trustpilot reviews