SKU: 27586877297

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

$76.20 $84.67
Save 10%
No.2 Bestseller on pluriversity.net >

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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
  • 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: 27586877297

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 448 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Masked Reviewer
Pawtucket, US
★★★★★ 5
Gets the Creative Juices Flowing
Format: Paperback
I picked up this book after hearing Kim Addonizio give a reading at my college when I was an undergraduate. Creative Writing and poetry were my areas of emphasis and although we used a different textbook in my poetry class, I came to love this one. It won't give you the formal training in meter and poetic forms that another textbook might, but I love the examples and the prompts for inspiration. It's my favorite book to turn to when I feel the creative well is running dry. It's warm and funny and you feel a real presence from the authors as if you have teachers with you. I haven't met Dorianne Laux, but I have chatted with Kim Addonizio twice after readings and she was lovely. (Her readings are fantastic, by the way, and I highly recommend them!) If you are familiar with Kim Addonizio'ss poems then you shouldn't be surprised to find a section on erotic poetry in this book. Erotic poems have a long tradition in poetry and they are not "porn" as one reviewer suggested. Sexuality and sensuality are part of life and the artistic expression of such is a special skill set. I think it's fantastic that this book doesn't sensor that. I love the examples chosen for this book--many beautiful, contemporary poems that utilize vivid and unexpected imagery. I find them inspiring. They make me want to write and they make me want to be a better writer. I do believe that if you are a beginner or if you are considering this book as a textbook for a class you should consider it as a supplement to a book that goes into a little more depth in certain areas, such as Writing Poems (see if you can get an older edition, if you are lucky, as I see this book has become quite expensive). But this is a fantastic little book and I love having both a hard copy to underline and put notes in and a Kindle copy to keep with me on my phone so I can have a little inspiration with me for easy access. No matter where you are in your journey as a poet, I believe this is a wonderful book to have in your library.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2021
K
Verified Purchase
Kasey P.
Battle Creek, US
★★★★★ 5
Received brand new book in perfect condition for less than ten dollars
Format: Paperback
Received brand new book in perfect condition for less than ten dollars. I needed this exact book for a creative writing course and I enjoy the exercises within the different sections. They are very thought provoking and creativity stimulating and would be excellent inspiration for any poetic or even descriptive writer. Also, I find the writing style of the author amazingly easy to read. It is simple and straightforward, easy to follow and not boring as some other texts are. The tone is inspirational honestly, always providing tips and writing encouragement. This is a nice positive twist and delightful different perspective for aspiring writers and though it sounds to be directed at amateurs, I think any author who may experience writer's block at times could find this useful and full of insight to try out fresh perspectives to pen about topics that may be applied to a broad range of subjects. Quality informative and yet uplifting text regarding poetic writing!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2017
M
Verified Purchase
Marianne
New York, US
★★★★★ 5
Practical, Useful, Down to Earth, Inspiring!
Format: Paperback
I love this book. After reading the first chapter early one morning I went outside to feed and water my cats and came in and wrote a poem about flowing water, tangled morning glories and memories of my mother. It's one of the most inspiring, practical and encouraging books about writing poetry that I've ever read, and trust me, I've read them all. It has technical information and poems to illustrate each chapter, which is very helpful. The suggestions at the end of each chapter are down to earth and do-able, unlike some books that are just too high-minded for the average person. If you love to write poems and just need some inspiration and a little advice and encouragement, then definitely buy this book. It's worth its weight in gold!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 18, 2005
C
Verified Purchase
Cindy Lou Lpn
Birmingham, US
★★★★★ 4
Took me by surprise 😮
Format: Paperback
The revised part of my review: I do agree with a reviewer; Thomas "Should Have Been Better" Especially his paragraph here: [Unless (like the authors) you think that Sharon Olds' "passing blood and feces and water" and her "stool black with iron pills" (page 234) are high points in the world of modern poetry, you may resist their suggestion to "read all five of her books, for pleasure first, of course, but secondly to examine how she goes about her difficult task" (page 47).] As I have read more, I am reevaluating my own opinions of this book. I still feel it has been helpful, although much of it I would have preferred to have never read! Poor choice of examples to a student indeed! This, is my original review: I thought it was going to be a bunch of lame assignments, well there definitely are some assignments so to speak. I haven't even made it through half of the 1st chapter and I've written 6 or 7 new reflections (which some call poetry)! It digs deep, at least it did for me...pretty personal when you open yourself up to it. Good challenge and good lessons to glean from and grow as a writer. I still plan on keeping this around, probably with a few pages removed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 1, 2023
A
Verified Purchase
Ann Onomymous
Charlottesville, US
★★★★★ 5
Arrived in good condition
Format: Paperback
Arrived in good condition
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026

recommand products

Wolf Tooth Bottom Bracket Tool - BBS5212, 12 Notch, 52mm
30.95
Purina Pro Plan Cat Delicate indyk saszetka 4x85g 3+1 gratis
13.68
Wolf Tooth EnCase System Chain Tool Driver Pin
12.95
Purina Pro Plan Cat Sterilised wołowina saszetka 4x85g 3+1 gratis
13.68
Friskies Mix Rybny w sosie saszetki 4x85g
10.60