Johns Manville R-21 Kraft-Faced Fiberglass Batt Insulation, 15.25 in x 93 in (68.94 sq ft)
SKU: 72727398692

Johns Manville R-21 Kraft-Faced Fiberglass Batt Insulation, 15.25 in x 93 in (68.94 sq ft)

Sale price$143.07 Regular price$158.97
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Description

Johns Manville R-21 Kraft-Faced Fiberglass Batt Insulation, 15.25 in x 93 in (68.94 sq ft)R 21 Kraft Faced Fiberglass Wall Batt Insulation Johns Manville R 21 kraft faced fiberglass batts are designed for 2x6 wood stud walls to help improve energy efficiency and reduce noise. The kraft facing provides a built in vapor retarder for moisture control in concealed applications like exterior walls. Key Features: Sized for 2x6 Walls: 15. 25 in wide batts fit 16 in on center wood stud framing and 8 ft wall cavities. Built In Vapor Retarder: Kraft

R-21 Kraft-Faced Fiberglass Wall Batt Insulation

Johns Manville R-21 kraft-faced fiberglass batts are designed for 2x6 wood-stud walls to help improve energy efficiency and reduce noise. The kraft facing provides a built-in vapor retarder for moisture control in concealed applications like exterior walls.


Key Features:

  • Sized for 2x6 Walls: 15.25-in wide batts fit 16-in on-center wood-stud framing and 8-ft wall cavities.
  • Built-In Vapor Retarder: Kraft facing helps control moisture in concealed wall applications.
  • Energy & Sound Control: Helps improve thermal performance and provides sound control.
  • Easy Installation: Press-fit between studs and staple facing tabs to framing when needed.
  • Formaldehyde-Free & Durable: Formaldehyde-free fiberglass that won’t rot or mildew and is noncorrosive to pipes and wiring.

Specifications Table:

Specification Details
Category Batt Insulation
Insulation Type Fiberglass
Faced/Unfaced Kraft faced
Maximum R-Value 21
R-Value per Inch 3.8181
Width (Inches) 15.25
Length (Inches) 93
Thickness (Inches) 5.5
Coverage Area (Sq. Feet) 68.942
Stud Spacing (Inches) 16
Framing Type Wood studs
Fits 2 x 6 Walls Yes
Fits 2 x 4 Walls No
Vapor Retardant Yes
Sound Barrier Yes
Formaldehyde Free Yes
ENERGY STAR Certified Yes
GREENGUARD Gold Certified Yes
Warranty 1-year limited
For Use in Walls Yes
For Use in Basements Yes
For Use in Crawlspaces Yes
For Use in Attics No
For Use in Ceilings No
For Use in Floors No
For Use in Garage Doors No
For Use in Doors No
For Use in Windows No
Package Weight (lbs.) 29.47
Package Type Multi-pack
Package Count 7
Total Package Quantity 35
Multi-Pack Quantity 5
Bag Dimensions (L x W x D) 20 x 20 x 50
UNSPSC 11162400

Frequently Asked Questions (FAQ):

Q: What wall framing is this insulation designed for?
A: It’s designed for 2x6 wood-stud walls with 16-in on-center spacing.


Q: Does it include a vapor barrier?
A: Yes—it's kraft-faced and includes a built-in vapor retarder for moisture control.


Q: Where can I use these batts?
A: They are listed for use in walls, basements, and crawlspaces (not for attics or ceilings).


Q: Is it formaldehyde-free?
A: Yes, it is specified as formaldehyde-free.


Q: How much area does one package cover?
A: Coverage is 68.942 sq ft per package.


Quiet luxury starts behind the walls.

Think of this as the invisible couture of a well-finished home—R-21 fiberglass batts that refine comfort with a hush and a steady, enveloping warmth. The kraft facing adds a purposeful layer of protection, quietly managing moisture where craftsmanship matters most. Use it to elevate a 2x6 wall assembly in living spaces and bedrooms for a calmer, more insulated feel. It’s a foundational detail that makes everyday life feel undeniably more luxurious.


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

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: 72727398692

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★★★★★ 5
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These slippers came very quick with the shipping, and I'm just so happy that they fit amazing. They do have a little lip where the heel is for a little added supports I believe to keep your foot from sliding out as easy. Will they slip out with enough movement? Yeah, but if you're just walking around, it's enough. Typically I tend to go with black colors, but went with the brown this time for a change up. They are so adorable~ They do have memory foam in them, and are very comfortable to wear around the apartment. They do have a hard sole, which is on the thicker side compared to how some slippers have a thin grip on the bottom to be the sole, and is good if you have to wear them outside briefly. The size fits wonderful, not to loose or tight, granted with time and use, they might get a bit loose, but right out of the packaging, and only wearing for a small time around the apartment, they are a glass slipper fit. I stayed to what I normally wear for shoe size, and the size is just right.
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Reviewed in the United States on August 20, 2022
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Cathy Smith
Battle Creek, US
★★★★★ 5
House shoes
Size: 7.5-8 Women/6.5-7 Men, Color: Dark Blue
These are really nice and comfortable. Love the design and color. The memory foam makes these feel so soft and comfy. A very good value, worth it. Its also the right size and the quality seems good.
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Reviewed in the United States on March 9, 2025
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Eric Mccurry
Waukegan, US
★★★★★ 4
Cute and comfortable
Love these
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Reviewed in the United States on January 27, 2025
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Janice Bullock
Carnegie, US
★★★★★ 5
Comfort in fit
Size: 6-7 Women/5-5.5 Men, Color: Pink Cat
Soft adorable
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Reviewed in the United States on April 4, 2026
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Amy Johnson
Phoenix, US
★★★★★ 5
Great slippers made very well for a great price!
Size: 10.5-11 Women/10-10.5 Men, Color: Black
I am in love with these cat slippers. Part of me thought they wouldn't be of good quality but when they arrived I was pleasantly surprised! The sole on these slippers is strong and sturdy which was one of the main reasons I purchased these. Prior to owning these I had a different pair of slippers that had a soft sole, every time it would rain my feet would get soggy with these slippers I don't have that problem. The cute cats were the other reasons for purchase, they are just so cute! The stitching on them seems to be sturdy and very well done. AND the best part, THE SIZE RANGE! I am a women with rather large feet, size 12 in women's to be exact. I can never find cute feminine slippers in my size but these not only have my size but they were actually true to size and fit!
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