Is this safe to vent a portable ac? ac's can get really hot.

I've never owned a portable AC. If there is a 4" circle shaped vent hole on the portable AC, it should tolerate the heat. Stationary ACs condensate water, there is no vent hole.

anyone use this for garage auto exhaust tube?

I am currently using this to exhaust the air in my wood shop

Is this suitable for marine use?

No paperwork came with it indicating whether it is USCG compliant (if there is such a requirement). If you want to use it as a duct for a bilge blower, I would say go ahead and use it. If you are concerned about fire retardancy, I suggest you contact the seller first.

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AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 8-Feet Long for Heating Cooling Ventilation and Exhaust, Black

AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 8-Feet Long for Heating Cooling Ventilation and Exhaust, Black

Product ID: 395837308

Details

Brand
AC Infinity
Colour
black
Item Length
8 Feet
Item Weight
0.48 Kilograms
Manufacturer
AC Infinity
Material
Alloy Steel

🌀Flexible steel-wire spiral core

✂️Customizable 8-ft length

🛡️4-layer heavy-duty protection

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R1860

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖤 Elevate your airflow game with AC Infinity’s sleek, heavy-duty ducting—because your space deserves the best.

COMPLETE KIT - Includes two stainless steel clamps for secure, leak-proof connections right out of the box.
TAILORED FIT - Cut to size for any ventilation setup, ensuring a perfect, custom installation every time.
PREMIUM MATERIALS - Constructed from fire-resistant aluminum foil and tough PVC thermoplastic for superior protection.
UNMATCHED DURABILITY - Four-layer design resists leaks, tears, and cuts for long-lasting performance.
EFFORTLESS FLEXIBILITY - Steel-wire spiral core bends easily to fit tight, hard-to-reach spaces without hassle.

The AC Infinity Flexible 4-Inch Aluminum Ducting is an 8-foot ventilation solution featuring a robust four-layer construction that enhances durability and leak resistance. Its flexible steel-wire spiral core allows easy installation in tight spaces, while the aluminum and thermoplastic materials provide fire resistance and protection against cuts. Ideal for HVAC, grow rooms, and exhaust systems, it comes with two stainless steel clamps for secure fitting.

Specifications

ASIN	B07WRDTX4C
Best Sellers Rank	#358,414 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #639 in Exhaust Fans
Brand	AC Infinity
Brand Name	AC Infinity
Colour	black
Country of Publication	USA
Customer Reviews	4.6 out of 5 stars 11,018 Reviews
Global Trade Identification Number	00819137021020
Included Components	Two stainless steel duct clamps
Item Dimensions L x W	2.44L x 0.1W Meters
Item Length	8 Feet
Item Weight	0.48 Kilograms
Manufacturer	AC Infinity
Manufacturer Warranty Description	no warranty available
Material	Alloy Steel
Material Type	Alloy Steel
Nominal Wall Thickness	0.25 inches
Outside Diameter	4 Inches
Product Dimensions	2.44L x 0.1W Meters
UPC	819137021020
Unit Count	1.0 Count

Reviews

A**N

ممتاز

منتج ممتاز

7.08.2022

R**O

Calidad

Excelente calidad

29.09.2025

う**る

まったく

やくにたたない結露する

26.08.2020

M**O

Qualità non al top

spellandolo, sotto è apparsa la skin originale grigia e si è rotta la parte finale. Mi aspettavo maggiore qualità visto il prezzo

30.01.2026

G**N

Did not include clamps

11.01.2026

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R1860

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In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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