SKU: 60511243739

JM R-21 Kraft-Faced Fiberglass Batt Insulation, 15 in. x 93 in., 67.81 sq. ft. (7-Piece Bag)

Sale price$175.64 Regular price$195.15
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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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Description

JM R-21 Kraft-Faced Fiberglass Batt Insulation, 15 in. x 93 in., 67.81 sq. ft. (7-Piece Bag)R 21 Kraft Faced Fiberglass Wall Batt Insulation JM R 21 kraft faced fiberglass batts are pre cut to fit 2x6 wall cavities for efficient thermal performance and added sound control. The kraft facing provides a built in vapor retarder to help manage moisture in wood framed walls and basements. Key Features: Pre Cut for 2x6 Walls: Designed for standard 8 ft walls with 16 in on center stud spacing (15 in. x 93 in. batts). Built In Vapor Retarder: Kraft

R-21 Kraft-Faced Fiberglass Wall Batt Insulation

JM R-21 kraft-faced fiberglass batts are pre-cut to fit 2x6 wall cavities for efficient thermal performance and added sound control. The kraft facing provides a built-in vapor retarder to help manage moisture in wood-framed walls and basements.


Key Features:

  • Pre-Cut for 2x6 Walls: Designed for standard 8-ft walls with 16-in on-center stud spacing (15 in. x 93 in. batts).
  • Built-In Vapor Retarder: Kraft facing helps control moisture when installed against framing in exterior wall applications.
  • Comfort & Quiet: Improves energy efficiency while helping reduce sound transmission through walls.
  • Formaldehyde-Free Fiberglass: Made with formaldehyde-free fiberglass insulation for indoor comfort.
  • Durable, Stable Batts: Dimensionally stable fiberglass resists slumping, settling, or breakdown in normal applications.

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Insulation Type Fiberglass batt
R-Value R-21
Coverage Area 67.81 sq ft
Batt Width 15 in
Batt Length 93 in (7.75 ft)
Thickness 5.5 in
Pieces per Bag 7
Stud Spacing 16 in on-center
Fits Wall Size 2 x 6 wall
Faced/Unfaced Kraft faced
Vapor Retardant Yes
Sound Barrier/Sound Control Yes
Formaldehyde Free Yes
Framing Type Wood studs
For Use in Walls Yes
For Use in Basements Yes
ENERGY STAR Certified Yes
GREENGUARD Gold Certified Yes
SCS Recycled Content Certification Yes
Warranty 1-year limited
Package Type Multi-pack
Total Package Quantity / Package Count 7
R-Value per Inch 3.8181
Bag Dimensions (L x W x D) 20 x 20 x 50

Frequently Asked Questions (FAQ):

Q: What stud cavity does this insulation fit?
A: It’s sized for 2x6 wood-stud wall cavities with 16-in on-center spacing (15 in. wide batts).


Q: Does the kraft facing act as a vapor barrier?
A: Yes. The kraft facing is a vapor retarder intended to help with moisture control when installed properly.


Q: How much area does one bag cover?
A: One bag covers 67.81 sq. ft.


Q: How many batts come in a bag?
A: The bag contains 7 pieces (batts).


Q: Where can it be used?
A: It’s commonly used in walls and basements; it’s also listed for use in walls, floors, and crawl spaces depending on the retailer listing and application needs.


Quiet Luxury Starts Behind the Walls

True comfort is architectural—felt in the hush of a room and the steady calm of temperature that never calls attention to itself. These R-21 kraft-faced fiberglass batts slip into 2x6 cavities with a tailored fit, while the kraft facing adds a thoughtful layer of moisture control. Use them to elevate bedrooms, home offices, or any space where serenity is the ultimate finish. It’s the invisible upgrade that makes a home feel undeniably luxe.


Upgrade your 2x6 walls with JM R-21 kraft-faced batts for efficient comfort, moisture control, and quieter rooms.

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: 60511243739

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4.8 ★★★★★
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J. stevens
Birmingham, US
★★★★★ 3
Comfy but only for home use
Size: X-Large, Color: Deep Gray, Size: X-Large, Color: Deep Gray
I love the idea of this dress but my issues with it are as follows... 1. No support for breast at all. The body suit fits great and legs don't ride up but do have to wear a bra if you have more than a b cup. 2. I had to adjust straps to tightest level to avoid gapping. Once you do that you can't get it down to use restroom without loosening straps again. 3. Im pretty sure its meant to be shorter however, im 5ft 3" and it comes to my knees. Not a big deal for me since id rather it be like that. 4. I don't think it will still fit once its washed and dried since it fit perfect now. My measurements are 5ft3",195#, 36ddd, 32" waist and 45" hip. I ordered an xl. 5. It's unusually heavy and shows sweat pretty bad so wouldn't wear for tennis or any other sport. 6. It's designed for much larger breast. Im a 36ddd and it still gaps on me The good part of it is... its super comfy to garden in or wear around the house so I may get one other size/color just for that but not sure id wear it out unless im at a campground lazing about (with a bra). I did order recommended size and fit correctly until its washed. It does also conceal weight but is not overly attractive on curvy women in my opinion
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Reviewed in the United States on April 21, 2026
S
Verified Purchase
Sophie
Lowell, US
★★★★★ 5
Postpartum Certified!! :)
Size: Medium, Color: Black
I am currently a breast feeding mother who is only 5 weeks post partum. Heading into the summer I needed clothes that fit my changing body and gave me a little confidence that I’ve been lacking recently. This dress has completely done it!! The material is extremely comfortable and not too tight on my body. It’s long enough to give me the coverage that I’m comfortable with but still makes me feel cute. Without knowing how to shop for or what size my body is at after birth, I listened to the comments and got a medium when I was thinking I might be a large and it fits great! Definitely size down though! I will be getting more!!!
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Reviewed in the United States on May 20, 2026
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Caitlyn
Grantham, US
★★★★★ 5
Cute beach outfit
Size: Medium, Color: Purple, Size: Medium, Color: Purple
Cute summer lounge outfit. Material is similar to a T-shirt so it's breathable. The shape wear is built in and sturdy and unnoticeable under the dress part. I love the pockets, they easily fit your phone and other items. It's a perfect beach outfit, honestly, and super cute with sandals. I'm 5'7" 168lbs and wearing a size Medium. Not necessarily a con, but something to note: if you're a thick thigh girlie like me, the legs of the shape wear do ride up if you're walking around a lot, so wouldn't recommend if that's something that bothers you.
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Reviewed in the United States on April 19, 2026
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Nicole Verdesi
West Palm Beach, US
★★★★★ 5
I LOVE this dress.
Size: Small, Color: Blue
I’m disappointed I cannot wear this every day this summer. Seriously considering buying another in a different color. So comfy. Perfect summer outfit, and so versatile. Great for playground, yard work, pool coverup, etc. I’m 5’4” 130 lbs. Fits true to size and so flattering! Was worried about it being too short, and I can see that being the case for taller ladies, but it’s the perfect length for me!
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Reviewed in the United States on June 4, 2026
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Jason K.
Boise, US
★★★★★ 5
Very Straightforward and Easy to Use
Reload type: One Time Reload
I have used this several times, and it has always been a smooth and convenient experience. The biggest advantage is how intuitive the process is. Reloading the balance is simple, quick, and easy to understand without unnecessary steps or confusion. It is especially useful for managing spending, setting a shopping budget, or keeping funds ready for future purchases. Instead of entering payment details every time, having balance available makes checkout faster and more convenient. I also appreciate how quickly the funds are applied, allowing immediate use once the reload is completed. This is one of those simple Amazon features that works exactly the way it should. Overall, easy, efficient, and user-friendly. I have been very satisfied with it. Five stars.
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Reviewed in the United States on April 21, 2026

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