R-11 Unfaced Fiberglass Wall Batt Insulation, 155-sq ft

Formaldehyde-free Johns Manville unfaced fiberglass batts deliver R-11 thermal performance and sound control for 2x4 wood-stud walls. Precut 15-in x 93-in batts install easily and are ideal for improving energy efficiency in basements and interior walls.

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Key Features:

• Thermal & Acoustic Performance: R-11 batts reduce heat transfer and dampen sound in interior wall assemblies
• Easy Fit for 2x4 Walls: Precut 15-in x 93-in batts sized for 8-ft walls with 16-in on-center stud spacing
• Unfaced Design: No vapor barrier—compatible with adding to existing insulation and flexible for various climates
• Healthy Home Certifications: Formaldehyde-free, GREENGUARD Gold, and SCS Recycled Content certified
• Durable Fiberglass: Will not rot, mildew, or corrode pipes, wiring, or metal studs

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Specifications Table:

Specification	Details
Coverage Area (Sq. Feet)	155
Length (Inches)	93
Width (Inches)	15
Thickness (Inches)	3.5
Faced/Unfaced	Unfaced
Fits 2 x 4 Walls	Yes
Fits 2 x 6 Walls	No
For Use in Basements	Yes
For Use in Walls	Yes
For Use in Attics	No
For Use in Ceilings	No
For Use in Crawlspaces	No
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 Windows	No
Formaldehyde Free	Yes
Framing Type	Wood studs
Insulation Type	Fiberglass
Maximum R-Value	11
R-Value per Inch	3.1429
Stud Spacing (Inches)	16
Sound Barrier	Yes
Vapor Retardant	No
ENERGY STAR Certified	Yes
GREENGUARD Gold Certified	Yes
Bag Dimensions (L x W x D)	15.5 x 20 x 49
Package Weight (lbs.)	24.18
Package Count	16
Multi-Pack Quantity	5
Package Type	Multi-pack
Total Package Quantity	80
Warranty	1-year limited
UNSPSC	11162400
CA Residents: Prop 65 Warning(s)	No

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Frequently Asked Questions (FAQ):

Q: How many batts are in the package and what area will it cover?
A: The multi-pack contains 16 precut batts and covers 155 sq ft.

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Q: Where can I use this insulation?
A: Designed for 2x4 wood-stud walls; suitable for basements and interior wall sound control. Not intended for attics, ceilings, floors, or crawlspaces.

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Q: Do I need a separate vapor barrier?
A: These batts are unfaced and do not include a vapor retarder. Follow local code requirements for vapor control in your climate zone.

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Q: Is it safe for indoor air quality?
A: Yes. It is formaldehyde-free and GREENGUARD Gold certified for indoor air quality, with SCS recycled content certification.

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Q: How is it installed?
A: Press batts into wall cavities between studs; trimming may be needed for exact fit. Ensure full cavity fill without compression.

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Quiet Comfort for Everyday Living

These crisp, unfaced batts slip into wall cavities like tailored linens, instantly softening the acoustic profile of a room. Their R-11 performance brings balanced warmth while the clean, formaldehyde‑free fibers keep interiors feeling fresh. Use them in basements and shared walls to create serene zones and polished transitions. A refined essential for homes that value quiet, efficient luxury.

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Upgrade your walls with Johns Manville R-11 batts today for quieter rooms and improved energy efficiency.