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.

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

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 0.3-1.0 micron particles

🌬️400 CFM max airflow

🛡️1mm cold-rolled steel durability

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€ 688.89

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Elevate your air game — because clean air is the new luxury.

SEAMLESS INTEGRATION - Fits 4-inch inline fans like CLOUDLINE S4/T4 for optimized HVAC performance.
EFFORTLESS MAINTENANCE - Slide-lock door with neoprene seal offers quick, dust-free filter swaps.
BUILT TO BRAVE THE ELEMENTS - Rugged 1mm cold-rolled steel & aluminum flanges ensure weatherproof longevity.
MAXIMIZE AIRFLOW EFFICIENCY - Supports up to 400 CFM to keep your whole house breathing easy.
BREATHE CLEANER LIVE BETTER - MERV 13 filter traps viruses, pollen, dust, and mold spores for fresher indoor air.

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. Designed for 4-inch inline fans, it supports up to 400 CFM airflow and includes a high-efficiency MERV 13 filter that captures fine particles like dust, pollen, mold spores, and viruses. Its slide-lock door with a neoprene seal ensures easy, dust-free filter changes, making it ideal for professionals seeking superior indoor air quality and seamless integration with CLOUDLINE series fans.

Specifications

ASIN	B0921N33Y7
Best Sellers Rank	#54,666 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #32 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 (279)
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
Product Grade	new
UPC	819137021693
Unit Count	1 Count

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€ 688.89

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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