SKU: 18782292658

Owens Corning Thermafiber UltraBatt R-15 3.5" x 24" x 48" (16 Bags)

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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

Owens Corning Thermafiber UltraBatt R-15 3.5" x 24" x 48" (16 Bags)Thermafiber UltraBatt R 15 Mineral Wool Insulation, 3. 5" x 24" x 48" Professional grade mineral wool batts designed for superior thermal performance, fire resistance, and sound control in residential and light commercial walls. Semi rigid, higher density batts install quickly and resist moisture, corrosion, deterioration, and mold. Key Features: Thermal Performance: R 15 mineral wool batts deliver reliable insulation for 2x4 wall cavities Fire

Thermafiber UltraBatt R-15 Mineral Wool Insulation, 3.5" x 24" x 48"

Professional-grade mineral wool batts designed for superior thermal performance, fire resistance, and sound control in residential and light commercial walls. Semi-rigid, higher-density batts install quickly and resist moisture, corrosion, deterioration, and mold.


Key Features:

  • Thermal Performance: R-15 mineral wool batts deliver reliable insulation for 2x4 wall cavities
  • Fire Resistance: Non-combustible composition with robust fire performance for added safety
  • Sound Control: Dense fiber structure helps reduce noise transfer between rooms
  • Moisture & Mold Resistant: Inorganic fibers resist moisture, corrosion, and mold growth
  • Easy Installation: Semi-rigid batts fit snugly in standard framing for faster, cleaner installs

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Insulation Type Mineral wool batts
Series Thermafiber UltraBatt
R-Value R-15
Thickness 3.5 in
Dimensions per batt 24 in x 48 in
Pack Quantity 16 bags
Fire Rating reference ASTM C 1338 (mold resistance standard cited on web data)
Application Residential and light commercial walls; exterior walls
Features Non-combustible; moisture, corrosion, deterioration, and mold resistant; sound control; higher density semi-rigid batts

Frequently Asked Questions (FAQ):

Q: What framing does this fit?
A: The 3.5-inch thickness is designed for standard 2x4 wall cavities; each batt measures 24" x 48".


Q: Is this product combustible?
A: No, Thermafiber mineral wool is non-combustible and provides enhanced fire resistance.


Q: Can it be used in exterior walls?
A: Yes, it's suitable for exterior wall insulation in residential and light commercial applications.


Q: Does it resist mold and moisture?
A: Yes, the mineral wool fibers are resistant to moisture and mold growth.


Q: How many bags are included?
A: This listing specifies a pack of 16 bags.


Elevate Walls with Quiet, Fire-Safe Warmth

UltraBatt’s dense mineral wool brings a refined calm to interiors—quieting rooms while cocooning them in consistent warmth. Its non-combustible fibers and crisp, semi-rigid form speak to performance-driven design. Pair it with clean-lined drywall and matte finishes for an elevated, modern envelope. It’s a discreet essential that underpins luxurious, resilient living.


Choose UltraBatt R-15 today for safer, quieter, and energy-efficient walls that install with confidence.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • 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: 18782292658

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4.9 ★★★★★
Based on 19 reviews
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J
Verified Purchase
Joy
Birmingham, US
★★★★★ 5
I like it
Good box
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 19, 2026
A
Verified Purchase
AuntBerBer83
Louisville, US
★★★★★ 3
Small but Functional
Small, but works for what little bit of jewelry I wear!
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Reviewed in the United States on August 12, 2025
N
Verified Purchase
niresha allen
Whiting, US
★★★★★ 5
Awesome
Organization is good fit for all my jewels
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Reviewed in the United States on March 26, 2026
N
Nuby
Port Orchard, US
★★★★★ 5
Jewelry box that holds a lot.
Color: Pink, Size: 2 Layer
This jewelry box is so sturdy and holds A LOT of jewelry. Not only does it look gorgeous it’s actually functional and does its job ! I highly recommend.
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Reviewed in the United States on December 22, 2025
D
D.
Lowell, US
★★★★★ 4
Perfect if you're anything like me
Color: White, Size: 2 Layer
I have about 20 small jewelry boxes sitting in my closet, stacked up high, threatening to topple over any time I reach over them to grab something else. I don't know what's in those boxes, except that it's jewelry I purchased and liked well enough to keep so that I could wear it again. But since all of the pieces are closed up inside, I almost never wear them because I don't want to dig through all 20 boxes to find the 1 thing I want when I'm already almost late to wherever I'm going. If ANY of that sounds anything like you, you need this jewelry box. Is it the most premium thing you've ever seen? No, but does it have a lot of storage space for a pretty compact form factor and hold a ton of stuff? Yes, it totally does. And is the price super reasonable? Yes, it is. And if you kind of squint at it, and look through softer eyes, it doesn't really matter that yes, this is kind of cheaply constructed, and the dividers do move around a little bit because they're not anchored to the sides of the trays. I was able to consolidate all of those jewelry boxes down into this one box, and I no longer need to hold my breath when I try to grab something over the top of the pile because I was able to throw. them. all. out! The satisfaction of purging my own personal leaning tower of Pisa was worth the price alone. But onto the nitty gritty details: yes, the see-through part is acrylic and not glass. I'm okay with that because I don't need more breakable things sitting in my closet. Yes, the dividers aren't super stable. I'm okay with that because they work well enough and keep each piece where it belongs. Yes, it's pleather (aka "vegan leather"). I'm okay with that because I don't need cow hide to hold my jewelry to make it feel more precious, especially because most of my jewelry is pretty inexpensive stuff anyways. I don't notice any glaring cosmetic defects when looking at it, aside from the one very squiggly scratch in my acrylic top that doesn't bother me too much, but since it does mean that quality control may be a bit lacking, this gets a very solid 4 stars.
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Reviewed in the United States on November 5, 2025

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