SKU: 8893965976

Knauf Insulation EcoBatt R-11 Unfaced Fiberglass Insulation Batts, 3.5 in. x 24 in. x 96 in., 256 sq. ft. (4 Bags)

Sale price$107.10 Regular price$119.00
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Description

Knauf Insulation EcoBatt R-11 Unfaced Fiberglass Insulation Batts, 3.5 in. x 24 in. x 96 in., 256 sq. ft. (4 Bags)R 11 EcoBatt Unfaced Fiberglass Insulation Batts, 24 in. x 96 in. Knauf EcoBatt R 11 unfaced fiberglass batts deliver reliable thermal and sound control for 2x4 interior or exterior walls, floors, and ceilings. Pre cut for 8 ft steel stud walls, they install easily, recover to full thickness, and are bonded with plant based, formaldehyde free ECOSE Technology. Key Features: Thermal & Acoustic Performance: R 11 batts help regulate temperature and

R-11 EcoBatt Unfaced Fiberglass Insulation Batts, 24 in. x 96 in.

Knauf EcoBatt R-11 unfaced fiberglass batts deliver reliable thermal and sound control for 2x4 interior or exterior walls, floors, and ceilings. Pre-cut for 8-ft steel stud walls, they install easily, recover to full thickness, and are bonded with plant-based, formaldehyde-free ECOSE Technology.


Key Features:

  • Thermal & Acoustic Performance: R-11 batts help regulate temperature and reduce noise in walls and floors.
  • Easy Installation: Pre-cut 24 in. x 96 in. batts for 2x4, 8-ft walls; softer feel for simple cutting and fitting.
  • Healthier Materials: Formaldehyde-free ECOSE Technology; GREENGUARD Gold certified and free of Red List chemicals.
  • Sustainable Build: Made with a high percentage of recycled glass and compression-packed for efficient transport and storage.
  • Snug Fit: Resilient fibers recover quickly to full thickness for consistent coverage.

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Insulation Type Fiberglass batt
R-Value R-11
Facing Unfaced
Batt Size 24 in. W x 96 in. L x 3.5 in. T
Fits Stud Depth 2x4 wall
Coverage Area per Bag 256 sq. ft.
Number of Pieces per Bag 16
Compatible Install Surfaces Concrete; Existing drywall; Metal; Plywood; Wood
Insulation Locations Interior wall; Exterior wall; Floor
Roll or Batt Batt
Product Weight 36.37 lb
Bag Size 4.17 ft. x 25 in. x 16 in.
Pack Size 1
Warranty 1-year limited

Frequently Asked Questions (FAQ):

Q: How much area does this package cover?
A: 256 sq. ft. total coverage.


Q: Where can I install these batts?
A: Suitable for 2x4 walls (interior/exterior), floors, and ceilings; compatible with wood, metal, plywood, existing drywall, and concrete surfaces.


Q: Are these batts faced?
A: No, they are unfaced fiberglass batts.


Q: What are the dimensions of each batt?
A: Each batt is 24 in. wide x 96 in. long x 3.5 in. thick.


Q: Is there an installation guide?
A: Yes—see the linked Instructions/Assembly PDF for step-by-step guidance.


Quiet Comfort, Cleverly Engineered

EcoBatt’s warm, natural tone and clean lines slip effortlessly behind your finishes, crafting rooms that feel hushed and composed. I love its resilient loft—once in place, it springs to a full, plush thickness for a seamless envelope. Pair it with crisp gypsum walls and matte black hardware to heighten the sense of calm. It’s the invisible luxury that elevates everyday living.


Upgrade your walls with EcoBatt R-11 today for quieter, more comfortable rooms with eco-friendly performance.

Warranty

Installation

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: 8893965976

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Lauren
Charlottesville, US
★★★★★ 5
Great fit, truly doesn’t slide off heel
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium, Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
I’ve scoured all the lands looking for a no-show sock that was 1) thin, 2) quality, soft, breathable material, 3) didn’t dig into my feet/heels, 4) doesn’t shrink, and most importantly 5) stays on the back of my heel without a bulky non-slip rubber piece and these check all the boxes! Perfect for low profile women’s work shoes like Keds, etc. Not low enough for most flats though. I wear a women’s size 9.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2025
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Elliz
Bozeman, US
★★★★★ 5
So good - I’m buying MORE.
Number of Items: 3, Color: White (3-pairs), Size: Medium
I’m gonna give you more detail than you need about why I’m buying these socks again. I’ve been the mom of girl athletes. I’ve been a model and a fashion director. I’ve worn every brand of shoe on the planet and never found a shoe that did NOT find a vulnerable spot on my foot to rub raw. Even my beloved white Jack Purcell sneakers. With that said - I don’t like socks. I’ve bought a TON of them in 35+ years.....all major brands. They shift. They lose their shape. They get holes in them and wear out too fast. Not these. I retired this year, and knowing I’d be in sneakers a lot, traveling, sightseeing ...... I bought these 6 months ago and have worn them constantly. I’ve traveled with them. I’ve washed them in hot water and bleach. The socks are like brand new. They are exactly the right cut so as not to be seen in a basic sneaker. The little silicone patch on the heel stays put. Not once have I had to dig down into my shoe and pull the sock back up. The socks have stayed soft and EXACTLY the same as the day they were new. Like I said - I am back to buy them again. Great quality!
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Reviewed in the United States on January 20, 2021
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Judy Fletcher
Dallas, US
★★★★★ 5
No slip low socks
Number of Items: 3, Color: Black/White (3-pairs), Size: Medium
Perfect! ❤️ these!
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Reviewed in the United States on February 16, 2026
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Susan
Phoenix, US
★★★★★ 4
Stay put!
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
Nice and thin, soft, and stay put. I wear an 8 shoe and don’t like a thick sock taking up room. These socks are a bit tight on big toe. Wish they came in large.
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Reviewed in the United States on October 10, 2023
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Stephanie Robnett
Massapequa, US
★★★★★ 5
The best
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
The best no show socks I have found. Stay in place very well and hold up wash after wash. I have tossed all the other brands I’ve bought over the years and stocked up on these as I was tired of digging through the drawer hoping to find a clean pair.
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Reviewed in the United States on December 8, 2024

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