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 4-Inch Aluminum Ducting, 8-Feet Long Four-Layer Protection

AC Infinity 4-Inch Aluminum Ducting, 8-Feet Long Four-Layer Protection

Product ID: 173301439

Details

Brand
AC Infinity
Colour
Black / Black
Item length
8 Feet
Item weight
0.48 Kilograms
Material
Aluminium
Maximum pressure
4 Bars

🌀Flexible steel-wire spiral

📏8 ft length, customizable

🛠️4-layer heavy-duty durability

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€ 36.51

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Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌬️ Upgrade your airflow game with AC Infinity’s heavy-duty flexible ducting!

TAILORED TO YOUR NEEDS - Cuttable 8-foot length adapts perfectly to any HVAC, dryer, or grow room setup.
EFFORTLESS INSTALLATION - Includes two stainless steel 4" duct clamps for a secure, no-fuss fit every time.
BOOST EFFICIENCY AIRFLOW - Optimized aluminum and thermoplastic materials improve ventilation performance and longevity.
FLEXIBILITY MEETS FUNCTION - Steel-wire spiral design bends easily to fit tight, hard-to-reach spaces without kinks.
BUILT TO LAST DESIGNED TO PERFORM - Four-layer construction resists leaks, tears, and cuts for unmatched durability.

AC Infinity’s 4-inch diameter, 8-foot long aluminum ducting features a robust four-layer design with a flexible steel-wire spiral core, ensuring durability and easy installation in HVAC, dryer, and grow room applications. Constructed from aluminum and thermoplastic, it resists leaks and tears while allowing length customization. Comes with two stainless steel clamps for secure fitting, enhancing ventilation efficiency and reliability.

Specifications

ASIN	B07WRDTX4C
Best Sellers Rank	8,517 in DIY & Tools ( See Top 100 in DIY & Tools ) 12 in Ducting
Brand	AC Infinity
Colour	Black / Black
Country of Origin	China
Customer Reviews	4.6 4.6 out of 5 stars (33,960)
Global Trade Identification Number	00819137021020
Item Dimensions L x W	2.44L x 0.1W metres
Item Length	8 Feet
Item Weight	0.48 Kilograms
Manufacturer	AC Infinity
Material	Aluminium
Maximum Pressure	4 Bars
Nominal Wall Thickness	1 millimeters
Outside Diameter	4 Inches
UPC	819137021020
Unit Count	1.0 count

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