SKU: 88361268132

Johns Manville R-30 Attic Kraft-Faced Fiberglass Batt Insulation, 88-sq ft Coverage (24-in W x 48-in L), K1243

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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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Description

Johns Manville R-30 Attic Kraft-Faced Fiberglass Batt Insulation, 88-sq ft Coverage (24-in W x 48-in L), K1243R 30 Kraft Faced Fiberglass Batt Attic Insulation, 88 sq ft High performance R 30 kraft faced fiberglass batts designed for 24 in on center attic framing. Provides thermal efficiency, moisture control with built in vapor retarder, and sound reduction across 88 sq ft of coverage. Key Features: Energy Saving R 30 Performance: Improves thermal efficiency to help lower heating and cooling costs. Built In Moisture Control: Kraft facing acts as a vapor

R-30 Kraft-Faced Fiberglass Batt Attic Insulation, 88-sq ft

High-performance R-30 kraft-faced fiberglass batts designed for 24-in on-center attic framing. Provides thermal efficiency, moisture control with built-in vapor retarder, and sound reduction across 88 sq ft of coverage.


Key Features:

  • Energy-Saving R-30 Performance: Improves thermal efficiency to help lower heating and cooling costs.
  • Built-In Moisture Control: Kraft facing acts as a vapor retarder for attics, ceilings, and floors.
  • Pre-Cut Convenience: 24-in x 48-in batts sized for 24-in on-center joist spacing; simple press-in installation.
  • Durable, Healthy Choice: Formaldehyde-free fiberglass that won’t rot, mildew, or corrode pipes and wiring.
  • Certified Indoor Air Quality: GREENGUARD Gold and SCS recycled content certifications; ENERGY STAR partner.

Specifications Table:

Specification Details
Insulation Type Fiberglass
Faced/Unfaced Kraft faced
Coverage Area (Sq. Feet) 88
Length (Inches) 48
Width (Inches) 24
Thickness (Inches) 10.25
Maximum R-Value 30
R-Value per Inch 2.9268
Stud Spacing (Inches) 24
Formaldehyde Free Yes
Sound Barrier Yes
Vapor Retardant Yes
ENERGY STAR Certified Yes (partner program)
GREENGUARD Gold Certified Yes
Package Type Individual pack
Total Package Quantity 11
Package Count 11
Bag Dimensions (L x W x D) 24.5 x 20 x 50
Package Weight (lbs.) 34.14
Warranty 1-year limited
For Use in Ceilings Yes
For Use in Attics Yes
For Use in Floors Yes
For Use in Basements No
For Use in Crawlspaces No
For Use in Doors No
For Use in Duct No
For Use in Electrical No
For Use in Garage Doors No
For Use in Masonry No
For Use in Plumbing No
For Use in Vents No
For Use in Walls No
For Use in Windows No
Fits 2 x 4 Walls No
Fits 2 x 6 Walls No
UNSPSC 11162400

Frequently Asked Questions (FAQ):

Q: How much area does one package cover?
A: This pack covers 88 sq ft with 11 pre-cut batts measuring 24 in x 48 in.


Q: Where can I install these batts?
A: Designed for attics and ceilings with 24-in stud spacing; also suitable for floors. Not for walls or basements per specs.


Q: Do I need a separate vapor barrier?
A: No—the kraft facing provides a built-in vapor retarder. Staple the tabs to joists if additional securement is needed.


Q: Are these batts safe for indoor air quality?
A: Yes, they are formaldehyde-free and GREENGUARD Gold certified.


Q: What tools are recommended for installation?
A: Utility knife, gloves and eyewear, long-sleeved clothing, caulk or spray foam, and an attic ruler.


Quiet, Cozy Attics with Effortless Precision

These R-30 kraft-faced batts wrap your attic in a cocoon of comfort, dialing down drafts and hush while elevating energy performance. The tailored 24-by-48-inch cuts slide neatly between joists, creating clean lines and a polished finish. Pair with bright attic lighting and painted storage to transform the space into a serene, functional retreat. It’s a refined upgrade that feels luxurious in everyday living.


Upgrade your attic’s efficiency and comfort today with JM’s easy-install R-30 kraft-faced batts.

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: 88361268132

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4.8 ★★★★★
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Verified Purchase
Laurena
Cuba, US
★★★★★ 1
Cracked Tooth
Update: While I originally loved this product and so did my dogs, I feel the need to update this review. The Dura Chew Nylabones are incredibly hard, which is what makes them last so long. However, one of our dogs did crack a tooth recently from chewing on a Dura Chew. Since then, we have been very hesitant to allow any of our dogs to chew on these as other reviews also state that dogs have cracked teeth. We have since thrown out all of the Dura Chews that we had. We are still using the regular Nylabone products (when they aren't made in China), but once those are gone we will not buy any additional products from Nylabone. We have been buying Whimzees for our dogs for the last two years or so and they are a healthy edible alternative. They do not last as long because they are edible, but I have the peace of mind in knowing that my dogs are safe with them. Another healthy alternative would be antlers, which we also give to our dogs and they usually last a long time. Original review: Another great Nylabone product. I love that dogs can chew on Nylabone products and they can't pull off pieces like products from other brands (Hartz for example). The Dura Chews are especially great for our hard chewers and they last forever! I love all of the dimples on their chews too, they're great for keeping our dogs' teeth clean. The vet is always impressed when they check their teeth.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2015
S
Verified Purchase
Samurai
Port Orchard, US
★★★★★ 5
Excellent for heavy chewers!
Flavor Name: Beef, Size: Mini
My dog is between 1-2 years old, and is a heavy chewer. So far the Better Bone is lasting very well! He still is chewing away at it! Excellent quality, and I appreciate that there’s no plastic that my dog is consuming.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
A
Verified Purchase
Amazon customer
Belleville, US
★★★★★ 5
By far ... the SAFEST and most DURABLE bone for dogs that are hardy chewers!
Flavor Name: Beef, Size: Large
After searching high and low for a NON-TOXIC, DURABLE and truly SAFE dog bone, I finally found the large, beef-flavored, HARD version of the BetterBone for my year-plus-old rescue (Carolina Dog). 1 - it's made of all NATURAL food-grade materials (cellulose from plant cell walls) ... which means no nylon, no GMOs, and no other artificials materials so it doesn't event stain your flooring. My girl loves the tasty beef flavor. 2 - the wishbone DESIGN is genius because it gives her 3 ends to choose from (nubs v raised edges v smooth) and ample ways to stabilize it on the floor with her paws. 3 - it is uber DURABLE in standing up to the hardiest of chewers (my girl gnaws on hers daily and sometimes even multiple 10-minute sessions per day). It works great to clean and reduce tartar on her teeth. The biggest surprise was that it took 6 months for her to gnaw it down to a size that was no longer safe for her (i.e. a potential choking hazard), so I donated it to a lady with tiny dogs at the dog park. At $20 per large bone, it's a good value. 4 - and most importantly, ... it is super SAFE. It degrades in tiny little pieces that could not possibly cause a choking hazard, and being all natural (i.e. no nylon - which most bones do have), there is no worry if she does ingest some of the particles. They vacuum up with ease. The large bone weighs in at just over 12 ounces so it's kinda' heavy (9.25" long x 5" wide x 2" thick), but my 56 lb girl has no problem picking it up in her mouth before she hops up on the couch with me or into her bed. Thank you BetterBone for making a superior product that is healthy, safe and fun for my pup!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 15, 2025
K
Verified Purchase
Karen
Houston, US
★★★★★ 5
Great chew
Flavor Name: Beef, Size: Large
Excellent! My super chewer loves it! He chews it everyday and it holds up!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
J
Verified Purchase
jennabailey1272
Draper, US
★★★★★ 4
Decent durability
Flavor Name: Beef, Size: Small
My super chewer pit bull mix loved these! They lasted several weeks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026

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