SKU: 68208368000

Owens Corning Thermafiber UltraBatt R-23 Mineral Wool Batt Insulation, 5.5 in x 15 in x 47 in (Individual Pack)

Sale price$35.62 Regular price$39.58
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Description

Owens Corning Thermafiber UltraBatt R-23 Mineral Wool Batt Insulation, 5.5 in x 15 in x 47 in (Individual Pack)Thermafiber UltraBatt R 23 Mineral Wool Batt Professional grade mineral wool batts engineered for 2x6 exterior wall cavities deliver R 23 thermal performance with excellent fire and mold resistance. Semi rigid, unfaced batts are easy to cut and fit around irregularities for faster, cleaner installs. Key Features: High Thermal Performance: R 23 mineral wool for 2x6 exterior wall cavities to boost energy efficiency Fire and Moisture Resistance: Non

Thermafiber UltraBatt R-23 Mineral Wool Batt

Professional-grade mineral wool batts engineered for 2x6 exterior wall cavities deliver R-23 thermal performance with excellent fire and mold resistance. Semi-rigid, unfaced batts are easy to cut and fit around irregularities for faster, cleaner installs.


Key Features:

  • High Thermal Performance: R-23 mineral wool for 2x6 exterior wall cavities to boost energy efficiency
  • Fire and Moisture Resistance: Non-combustible and mold resistant for safer, healthier assemblies
  • Easy Installation: Semi-rigid, flexible batts cut cleanly and conform to irregular framing
  • Sound Control: Dense fiber structure helps dampen noise between rooms
  • Formaldehyde-Free: Made without added formaldehyde for improved indoor air quality

Specifications Table:

Specification Details
R-Value 23
Insulation Type Mineral wool
Faced/Unfaced Unfaced
Thickness 5.5 in
Width 15 in
Length 47 in
Coverage Area 24.5 sq ft per pack
Fits 2 x 4 Walls No
Fits 2 x 6 Walls Yes
For Use in Walls Yes
For Use in Attics No
For Use in Ceilings No
For Use in Floors No
Sound Barrier Yes
Framing Type Wood studs
Stud Spacing 16 in OC
Formaldehyde Free Yes
Vapor Retardant No
ENERGY STAR Certified Yes
Warranty Limited lifetime
Package Type Individual pack
Package Count 1
R-Value per Inch 4.18
Bag Dimensions (L x W x D) 47 x 26 x 15 in
Package Weight 29.2 lb
CA Prop 65 Warning Yes

Frequently Asked Questions (FAQ):

Q: Is this insulation faced?
A: No. It is unfaced and does not include a vapor retarder.


Q: What size studs does it fit?
A: Designed for 2x6 wood stud walls with 16-inch on-center spacing.


Q: Can it be used in ceilings or attics?
A: It is intended for wall cavities; Lowe's specs indicate not for attics, ceilings, or floors.


Q: How much area does one pack cover?
A: Each individual pack covers 24.5 square feet.


Q: What are the batt dimensions?
A: Each batt is 5.5 in thick, 15 in wide, and 47 in long.


Sculpted Warmth with Quiet Confidence

Thermafiber UltraBatt tucks into a wall like a tailored suit—crisp, dense, and utterly composed. Its mineral wool body delivers a refined hush and steadfast warmth, raising the caliber of everyday living. I love the deep, dimensional texture that feels architecturally intentional behind your finishes. Line your primary suite or media wall with it to craft a cocooned, luxury ambiance—comfort that’s as considered as your design.


Upgrade your walls with R-23 Thermafiber UltraBatt today and lock in comfort, quiet, and energy savings with every install.

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 68208368000

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Amazon Customer
Natrona Heights, US
★★★★★ 5
Great job by Asurion!
Asurion handled my claim quickly and efficiently. My return was picked up by UPS and an Amazon gift card for the full amount was received as promised. Very happy with the process.
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Reviewed in the United States on April 17, 2026
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Kelleen S.
Chelsea, US
★★★★★ 1
Make sure you read the terms and conditions and don't let them off the hook
Asurion is counting on the fact that you don't know how to read. They made the claim process aggravating and as difficult as possible. I CAN read and had to review the terms and conditions with them on the phone and threaten to involve an attorney before they would honor the coverage. They tried to say my product was not portable, when the word "portable" is literally in the name of the product. Then they tried to say the the accidental drop was not covered, but it clearly states in the terms and conditions that an accidental drop and a cracked screen is a covered event. I buy the coverage almost every time I am offered it, but I will be rethinking that going forward and Amazon should consider finding a different company to issue the protection plans for their products because I fear this is the beginning of a lot of complaints. I have filed a claim in the past and it was very straightforward and easy, but they must have a new company managing the plans now, because it was anything but easy. If I was an older person who was not tech savy, or who just took someone's word at face value, I would be out the cost of my item and the protection plan. BUYER BEWARE
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Reviewed in the United States on August 20, 2025
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Hugh Conley
Phoenix, US
★★★★★ 5
Refunded money quickly
Good service
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Reviewed in the United States on May 3, 2026
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Roxy Lampika
Boise, US
★★★★★ 5
Cover yourself!
My HP printer just stopped printing. Spent over 4 1/2 with HP Support doing all kinds of technical experiments with even the most complex Factory Restarts, this printer kept saying everything was working but it wouldn't print. HP finally declared it a hardware defective; told I needed a new printer and to recycle this one (less than 1 1/2 years old - don't make like they used to!). Called Asurion, who immediately processed a claim and arranged for a pickup of the defective printer since I can't drive. Fast quality service worth every penny if you're buying any kind of devices in today's world.
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Reviewed in the United States on May 20, 2026
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Billy P. Wofford
West Palm Beach, US
★★★★★ 5
Asurion is a great protection plan.
Asurion is a great product. I purchased a 3-piece cordless phones in 2022 and added the Asurion protection. Just recently the phones went out. I contacted Asurion and within 2 hours I had a gift card deposited in my Amazon account. I purchased new phones with the gift card and of course added the Asurion protection. I highly recommend Asurion protection plan.
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Reviewed in the United States on May 9, 2025

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