SKU: 27586877297

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

Sale price$76.20 Regular price$84.67
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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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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
  • 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

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4.3 ★★★★★
Based on 14 reviews
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W
Verified Purchase
Wendy, NY
Port Orchard, US
★★★★★ 5
Thick and big wipes
Size: 80 Count (Pack of 3)
Great quality and very moist. Great for cleaning up after a baby
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
L
Verified Purchase
lola
Lake Worth, US
★★★★★ 5
Best wipes I’ve ever used
Size: 10 Count (Pack of 6)
The price was so affordable I thought I might be disappointed. I’ve tried maybe 5 other brands and this is by FAR the best wipes and in perfect packaging for in home and travel use. The wipes are very thick, they do not break for ANYTHING I’m shocked. No fuzzy stringy debris like other wipes I’ve tried. Great for sensitive skin ! Will continue to buy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
M
Verified Purchase
Marz
Port Orchard, US
★★★★★ 4
Perfect Travel Wipes!
Size: 10 Count (Pack of 6)
These travel-size baby wipes are so nice! They’re thick, durable, and perfectly moist so you don’t need a bunch at once. Plus, the mini size is super cute and convenient for on-the-go.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
J
Verified Purchase
Jacquelyn Unpingco
Chelsea, US
★★★★★ 5
Amazing quality wipes for difficult messes!
Size: 80 Count (Pack of 3)
The quality of these wipes are impeccable! They are thick and super strong with the best texture to help difficult clean ups if you know what I mean. It comes with so much too I swear it took forever to even finish one bag. These will definitely be a keeper in my rotation of baby wipes! If you haven’t tried them u definitely recommend you give them a try at least once to see what I’m talking about!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026
A
Verified Purchase
Amanda Damron
Massapequa, US
★★★★★ 5
Durable and thick! No tears or rips!
Size: 80 Count (Pack of 3)
These are the only wipes we use! They are very durable... I have never had one rip or tear. Just 1 wipe is usually enough, MAYBE 2 for a big poo situation, but honestly 1 is usually good enough! The wipes are big and thick. Perfect!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026

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