R-11 Unfaced Fiberglass Wall Batt Insulation, 175 sq ft

Boost comfort and efficiency with Johns Manville R-11 unfaced fiberglass batts designed for 2x4 wood-stud walls. Pre-cut for 9-ft walls with 16-in stud spacing, they provide thermal performance and sound control without a vapor barrier.

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Key Features:

• Energy Efficiency & Sound Control: R-11 fiberglass batts reduce heat transfer and dampen noise in interior and exterior walls
• Unfaced Design: No vapor barrier—ideal for adding to existing insulation or pairing with separate vapor control where needed
• Easy, Pre-Cut Installation: Sized for 9-ft walls with 16-in on-center studs; simply press in place between studs
• Durable & Safe: Will not rot or mildew; noncorrosive to pipes and wiring; formaldehyde-free
• Certified Indoor Air Quality: GREENGUARD Gold and SCS Recycled Content certified; ENERGY STAR program partner

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Specifications Table:

Specification	Details
Coverage Area (Sq. Feet)	175
Length (Inches)	105
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 Walls	Yes
For Use in Basements	Yes
For Use in Attics	No
For Use in Ceilings	No
For Use in Crawlspaces	No
For Use in Doors	No
For Use in Floors	No
For Use in Garage Doors	No
For Use in Masonry	No
For Use in Windows	No
For Use in Duct	No
For Use in Electrical	No
For Use in Plumbing	No
For Use in Vents	No
Formaldehyde Free	Yes
Framing Type	Wood studs
Insulation Type	Fiberglass
Maximum R-Value	11
R-Value per Inch	3.1429
Sound Barrier	Yes
Stud Spacing (Inches)	16
Vapor Retardant	No
ENERGY STAR Certified	Yes
GREENGUARD Gold Certified	Yes
Warranty	1-year limited
Package Weight (lbs.)	27.3
Package Type	Multi-pack
Multi-Pack Quantity	5
Package Count	16
Total Package Quantity	80
Bag Dimensions (L x W x D)	20 x 20 x 50
UNSPSC	11162400

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Frequently Asked Questions (FAQ):

Q: How much area does this package cover?
A: 175 square feet total coverage.

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Q: What wall framing is it designed for?
A: Pre-cut for 2x4 wood-stud walls with 16-in on-center spacing and 9-ft height.

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Q: Does it include a vapor barrier?
A: No. These are unfaced batts and do not have a vapor retarder.

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Q: Can it be used in basements?
A: Yes, it is suitable for basements when local codes and moisture control practices are followed.

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Q: What are the dimensions of each batt?
A: 15 inches wide, 105 inches long, and 3.5 inches thick.

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Whisper-quiet comfort for clean-lined walls

These R‑11 fiberglass batts slip into 2x4 stud bays with effortless precision, bringing a hush and a steady, cozy climate to living spaces. The unfaced profile keeps the look streamlined while enhancing acoustic softness—perfect behind artful drywall and millwork. Pair them with crisp, painted finishes and natural textures to create rooms that feel serene and thoughtfully insulated. A smart essential for refined, luxurious home comfort.

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Upgrade your walls with Johns Manville R-11 batts today for easier installs, quieter rooms, and efficient year-round comfort.