SKU: 29853358938

Johns Manville Multi-Purpose Unfaced Fiberglass Roll Insulation, 5.33-sq ft, 16-in W x 4-ft L, 2-in Thick, Multi-pack

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Description

Johns Manville Multi-Purpose Unfaced Fiberglass Roll Insulation, 5.33-sq ft, 16-in W x 4-ft L, 2-in Thick, Multi-packMulti Purpose Unfaced Fiberglass Roll Insulation, 16 in x 4 ft Unfaced fiberglass roll insulation from Johns Manville for small projects and gap filling in attics, basements, crawlspaces, ceilings and walls. Sized for 16 in on center framing, this formaldehyde free roll helps improve energy efficiency and sound control. Key Features: Multi Purpose Use: Ideal for attics, basements, crawlspaces, ceilings and walls; great for filling gaps Easy Fit: 16 in

Multi-Purpose Unfaced Fiberglass Roll Insulation, 16-in x 4-ft

Unfaced fiberglass roll insulation from Johns Manville for small projects and gap-filling in attics, basements, crawlspaces, ceilings and walls. Sized for 16-in on-center framing, this formaldehyde-free roll helps improve energy efficiency and sound control.


Key Features:

  • Multi-Purpose Use: Ideal for attics, basements, crawlspaces, ceilings and walls; great for filling gaps
  • Easy Fit: 16-in width sized for 16-in on-center stud spacing; simple press-in installation
  • Unfaced Design: No vapor barrier—can be added over existing insulation for extra coverage
  • Health & Safety: Formaldehyde-free fiberglass; GREENGUARD Gold and SCS certified for indoor air quality
  • Durable Performance: Will not rot, mildew or deteriorate; noncorrosive to pipes, wiring and metal studs

Specifications Table:

Specification Details
Series Name Multi-Purpose
Bag Dimensions (L x W x D) 16 x 5 x 4.5 in
Coverage Area (Sq. Feet) 5.33
Length (Feet) 4
Thickness (Inches) 2
Width (Inches) 16
Faced/Unfaced Unfaced
Fits 2 x 4 Walls Yes
Fits 2 x 6 Walls No
For Use in Attics Yes
For Use in Basements Yes
For Use in Ceilings Yes
For Use in Crawlspaces Yes
For Use in Doors No
For Use in Duct No
For Use in Electrical No
For Use in Floors 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 Yes
For Use in Windows No
Formaldehyde Free Yes
Framing Type Steel studs
Insulation Type Fiberglass
Maximum R-Value 0
Package Count 40
Package Type Multi-pack
R-Value per Inch 0
Reflective No
Sound Barrier No
Stud Spacing (Inches) 16
Total Package Quantity 40
Vapor Retardant No
CA Residents: Prop 65 Warning(s) No
ENERGY STAR Certified Yes
GREENGUARD Gold Certified Yes
Warranty 1-year limited
UNSPSC 30141500

Frequently Asked Questions (FAQ):

Q: Can this be used with existing insulation?
A: Yes. As an unfaced roll, it can be added on top of existing insulation where no vapor barrier is needed.


Q: What framing does it fit?
A: It’s designed for 16-in on-center stud spacing and fits 2x4 walls.


Q: Is a vapor barrier included?
A: No. This product is unfaced and does not include a vapor barrier.


Q: Where can I install it?
A: Suitable for attics, basements, crawlspaces, ceilings and walls; not intended for floors, doors, or windows.


Q: Is it formaldehyde-free and certified?
A: Yes. It is formaldehyde-free and GREENGUARD Gold and SCS certified for indoor air quality.


Quiet, Cozy Comfort in a Clean, Minimal Roll

This slim, unfaced fiberglass roll brings understated utility to spaces that crave calm and comfort. Its 16-inch width slips neatly between studs, perfect for quick upgrades without visual clutter. Layer in attics or basements to soften acoustics and stabilize temperatures, then finish with crisp drywall for a polished envelope. A small yet essential touch that elevates everyday living with efficient, healthy insulation.


Upgrade your home’s comfort and efficiency today with this easy-fit Johns Manville multi-purpose roll insulation.

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: 29853358938

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4.4 ★★★★★
Based on 11 reviews
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Lucie P
Lowell, US
★★★★★ 4
Durable, Dogs love it
Color: Red
My Frenchie is a crazy chewer and can chew up a nylabone in a day, so I was looking for something that would last longer. So far this is holding up, and is pretty durable. Both my dogs like it a lot, it’s easy for them to grasp, and chewable but still very tough material. I suspect at some point it’ll wear down, but not for a while. The size was just as described / expected. Not too small and not too big
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2025
A
Verified Purchase
Amazon Purchase
Natrona Heights, US
★★★★★ 5
Great for aggressive chewers!
Color: Blue
Our aggressive chewers love these! Very durable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
O
Verified Purchase
Ozark Matt-Man
Lake Worth, US
★★★★★ 3
NOT FOR PLAYING CATCH.
Color: Blue
This toy is quite heavy, making it good for a chew toy or for fetch, but not for catch. It could very easily injure your dog as it damned near did mine.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
E
Verified Purchase
e callie
Bozeman, US
★★★★★ 5
Peanut butter delivery system
Color: Blue
My big dog loves this bone. I run PB down the middle on one side when we go out. He loves it and brings the bone to us when we return to play :gimme that bone.”
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
P
Verified Purchase
Pam’s Product Picks
Waukegan, US
★★★★★ 4
Durable bone that you can add a spreadable treat to
Color: Blue
Our German Shepherd was 4 months old when we purchased this. She’s going to be 6 months soon. She has been teething really bad. We wanted some way to sooth her pain. This product was just what we needed. We put it in the freezer with some peanut butter in the center on both sides. Once frozen we give to our puppy. She loves it. When we open the freezer she recognizes the ziplock package that it was delivered in which we store it in our freezer. She jumps around until we give it to her. She loves it and it keeps her occupied for a while. It is very durable. I did not notice any smell when we received it. It does not make any noise. The plastic material is safe for animals. To clean I put in the dishwasher. The only reason I did not give it 5 stars is because sometimes the peanut butter gets stuck in it and may need to go through the dishwasher twice which is not a big deal. Or you can hand wash it. I found the dishwasher was best for us. You do not even have to put anything on it, but our pup likes it. I would recommend to others.
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Reviewed in the United States on June 15, 2025

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