If I want to use it to wrap heat/air duct pipes up in the attic, should the aluminum side be on the inside or outside?

Should be on outside. The shiny surface has two functions: If heating season, the shiny surface has less heat radiation into the attic than any other surface color. When cooling, that shiny surface reflects -reduces the absorption - of heat radiation.

Want to insulate the kitchen fan exhaust pipe; is this an appropriate product for that use? If not, what should I use?

This would work using aluminum foil tape for the seams.

This is a roll of insulation 12 inches wide -- 15 foot long and 2 inches thick, there may be sheets of material in the 2 inches but I never counted them -- it is just 2 inches total thickness

Can this be used to wrap an aluminum dryer vent tube to prevent condensation on the outside of the tube during the winter?

I used it to insult my bathroom fan duct running through the attic. I had a problem with condensation dripping down into the bathroom. This fixed the problem.

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Thermwell Products 12"X15' Fbg Insulation Sp55 Pipe Insulation

Product ID: 17832372

Details

Brand
Frost King
Global Trade Identification Number
Material
Fiberglass
Product Dimensions
18.5"L x 12"W
Recommended Uses For Product
Insulation of

🔥4.3 R-Value thermal efficiency

🧰Fiberglass + foil for vibration reduction

🛠️15 feet length for extensive coverage

€ 83.90

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔥 Wrap your pipes in efficiency and silence — don’t let energy slip away!

EXTENDED COVERAGE - Generous 15-foot length wraps more pipes in one go—less hassle, more efficiency.
SECURE INSTALLATION - Easily wired or taped in place for a professional, long-lasting fit every time.
VIBRATION DAMPENING - Fiberglass with foil backing reduces noise and vibration for a quieter environment.
VERSATILE APPLICATION - Perfect for heating/cooling pipes, ducts, auto hoods, and trunks—adaptable to your needs.
MAXIMIZE ENERGY SAVINGS - 4.3 R-Value insulation locks in heat and cool air, cutting energy waste.

Thermwell Products 12"x15' Fiberglass Pipe Insulation offers a robust 4.3 R-Value thermal barrier combined with vibration reduction, designed for heating and cooling pipes, ducts, and automotive applications. Its 15-foot length ensures broad coverage, while the fiberglass and foil construction guarantees durability and noise control. Easy to install with wiring or tape, this insulation is a smart upgrade for energy-conscious professionals.

Specifications

ASIN	B000LNNHBU
Best Sellers Rank	#118,704 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #112 in Pipe Insulation
Brand Name	Frost King
Coverage	2160 square inches
Customer Reviews	4.2 4.2 out of 5 stars (322)
Global Trade Identification Number	00077578022956
Included Components	Thermwell foil wrap
Item Dimensions L x W	18.5"L x 12"W
Item Type Name	Frost King SP55 Fiberglass Pipe Insulation, 12" x 15'
Item Weight	2 Pounds
Manufacturer	THERMWELL PRODUCTS
Manufacturer Contact Information	1-800-526-5265
Manufacturer Part Number	SP55/6
Material Type	Fiberglass
Model Number	SP55/6
Recommended Uses For Product	Insulation of heating and cooling pipes, ducts, auto hoods, and trunks
UPC	077578022956
Unit Count	1.0 Count

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TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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

1 month ago

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€ 83.90

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

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Vikram D.

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

2 weeks ago

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