SKU: 27586877297

Johns Manville R-30 Unfaced Fiberglass Batt Insulation, 56.83-sq ft Coverage (15.5-in W x 48-in L) – U1323S

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Description

Johns Manville R-30 Unfaced Fiberglass Batt Insulation, 56.83-sq ft Coverage (15.5-in W x 48-in L) – U1323SR 30 Unfaced Fiberglass Batt Insulation, 56. 83 sq ft Johns Manville R 30 unfaced fiberglass batts deliver high thermal performance for attics and ceilings with standard 16 in on center framing. Pre cut 48 in lengths press in place for fast installation, improving energy efficiency and sound control without a vapor barrier. Key Features: High R Value Performance: R 30 fiberglass batts help reduce energy costs and improve comfort Ready to Install Size:

R-30 Unfaced Fiberglass Batt Insulation, 56.83-sq ft

Johns Manville R-30 unfaced fiberglass batts deliver high thermal performance for attics and ceilings with standard 16-in on-center framing. Pre-cut 48-in lengths press in place for fast installation, improving energy efficiency and sound control without a vapor barrier.


Key Features:

  • High R-Value Performance: R-30 fiberglass batts help reduce energy costs and improve comfort
  • Ready-to-Install Size: Pre-cut 15.5-in x 48-in batts fit 16-in OC framing; press-in-place install
  • Unfaced Design: No vapor barrier—ideal for adding over existing insulation
  • Health & Safety Certifications: Formaldehyde-free, GREENGUARD Gold and SCS certified
  • Durable Composition: Will not rot or corrode pipes, wiring, or metal studs

Specifications Table:

Specification Details
Coverage Area 56.83 sq ft
Batt Dimensions 15.5 in W x 48 in L
Thickness 8.25 in
Faced/Unfaced Unfaced
Insulation Type Fiberglass
R-Value R-30
R-Value per Inch 2.9268
Stud Spacing 16 in OC
For Use in Attics Yes
For Use in Ceilings Yes
For Use in Floors Yes
For Use in Walls No
Formaldehyde Free Yes
Framing Type Wood studs
Vapor Retardant No
GREENGUARD Gold Certified Yes
ENERGY STAR Certified Yes (program partner)
Package Type Multi-pack
Package Count 11
Total Package Quantity 11
Bag Dimensions (L x W x D) 16 x 20 x 50 in
Package Weight 31.03 lb
Sound Barrier Yes
Fits 2 x 4 Walls No
Fits 2 x 6 Walls No
CA Prop 65 Warning No
Warranty 1-year limited
UNSPSC 11162400

Frequently Asked Questions (FAQ):

Q: How much area does one package cover?
A: Each package covers 56.83 square feet.


Q: Where can these batts be used?
A: They are designed for attics and ceilings and can also be used in floors with 16-in on-center framing; not for walls or masonry.


Q: Do these batts include a vapor barrier?
A: No. They are unfaced, so there is no vapor retarder and they can be added over existing insulation.


Q: What are the dimensions and thickness?
A: Each batt measures 15.5 in W x 48 in L with an 8.25-in thickness.


Q: Are there any certifications?
A: Yes—ENERGY STAR partner product; GREENGUARD Gold and SCS recycled content certified; formaldehyde-free.


Cocoon Your Home in Quiet, Efficient Comfort

This R-30 fiberglass batt nestles into your attic bays with a crisp, tailored fit, instantly softening acoustics and stabilizing temperature. I love its clean, unfaced profile—streamlined and versatile for layering over existing insulation. Pair it with matte-black attic hardware and tidy wire management for a polished, thoughtful upgrade. It’s a discreet essential that elevates everyday living with luxe comfort and efficiency.


Upgrade your attic with JM R-30 batts today for a quieter, more energy-efficient home.

Shipping Notes
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Exchange/Return Notes
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SKU: 27586877297

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4.0 ★★★★★
Based on 14 reviews
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L
Verified Purchase
LanaB
Cuba, US
★★★★★ 5
Ends in a cliffhanger
Format: Kindle
Thankfully, the next book is already available. Roxy Collins is the queen of omegaverse slow burn. This particular series is omegaverse with wolf shifters. Thoroughly enjoyed this book! Lots of suspense and trying to figure out what is true and what's really going on. I loved it! Pretty spicy once the action starts. Heats are pretty much always spicy. There is a little bit of male interaction, but not full-on shmex. Definitely recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2025
D
Verified Purchase
Dolores Evans
Houston, US
★★★★★ 5
Epic!!!!
Format: Kindle
Absolutely addicted from the first page. The twists and turns, world building and character development all come together for the perfect Omegaverse. And let's not forget that spice because knots are life and these are spectacular. Running for book #2 because that cliffhanger was torturous.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 17, 2024
R
Verified Purchase
Ruth Ann Burt
New York, US
★★★★★ 5
Great book
Format: Kindle
I absolutely feel in love with all 4 characters!!! The bedroom scenes were 🌋🌡🔥🔥🔥. I couldn't put this book down!!! I'm hooked for the whole series Book 2 here I come!!!!! Its a fun easy book and story to read!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 4, 2024
D
Verified Purchase
Danyelle
Lake Worth, US
★★★★★ 4
Fun with a late blooming omega
Format: Kindle
I like this book. The story is fun, cute, and sexy. There's just a little drama, some excellent, steamy scenes, and a fairly good relationship building storyline. I especially like how all the main characters are a bit older than the usual 20 somethings I tend to see in this kind of book. Having said that, I wish there were more descriptions of the places, as well as the food in the fancy restaurant. I enjoyed the cocktails at the club, so I missed that kind of detail when Gray took Madison on a dinner date. I also wish there had been more interaction between Lucas and Madison, and Lucas and Rian. It felt a bit lopsided, with a focus on Rian, Madison, and Gray. I wish it had been proofread - there are a lot of typos, but nothing too distracting.
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Reviewed in the United States on September 12, 2022
J
Verified Purchase
Jennifer G
Whiting, US
★★★★★ 3
Madison Deserved Better
Format: Kindle
Madison was a beta...except she wasn't any longer. She was a late presenting Omega. And she was struggling. She was tall and thin, not tiny and curvy. She was opinionated. She was everything an Omega was not. After suffering through her first heat, her friends took her to Ardor, a club where Omegas came to safely find Alphas. She's not expecting much but then she connects with a sexy beta. And when she meets his Alphas, they set her body on fire. Maybe, she's found her no-strings-attached heat pack. Maybe, she's found something more. I could not connect with the characters in this book, so their story never resonated with me. And there was no love story; there was sex. Grey made it clear from the beginning that he had a true love and it was his beta boy, Rian. He went so far as to reassure Rian “Say the word, I’ll never touch her again. Lucas can put the babies in her. I only need you, beta boy”. So, Madison was there for babies, no emotions needed. Nice. No, thank you. I want the Omega to be the center of their world, not an incubator. Lucas and Rian weren't any better. After her heat, they let her leave. Not one of them made her feel valued. No one gave her a reason to stay or even offered a cuddle. And the sex didn't even come across as mind-blowing. Madison deserved better.
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Reviewed in the United States on March 11, 2025

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