R-21 Unfaced Fiberglass Batt Wall Insulation

Formal­dehyde-free Johns Manville R-21 unfaced fiberglass batts deliver thermal and acoustic performance for 2x6 wood-stud walls. Precut to 15 in. x 93 in., this multi-pack covers 67.81 sq ft and installs easily between 16-in on-center studs to improve energy efficiency and sound control.

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Key Features:

• Designed for 2x6 Walls: Precut 15-in x 93-in batts fit 16-in OC wood studs for fast installation
• Thermal + Acoustic Performance: R-21 value helps reduce heat loss and dampens sound transmission
• Unfaced Convenience: No vapor barrier—ideal for adding to existing insulation where needed
• 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)	67.81
Length (Inches)	93
Width (Inches)	15
Thickness (Inches)	5.5
Faced/Unfaced	Unfaced
Insulation Type	Fiberglass
Maximum R-Value	21
R-Value per Inch	3.8182
Fits 2 x 6 Walls	Yes
Fits 2 x 4 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 Floors	No
Stud Spacing (Inches)	16
Framing Type	Wood studs
Vapor Retardant	No
Sound Barrier	Yes
Formaldehyde Free	Yes
ENERGY STAR Certified	Yes
GREENGUARD Gold Certified	Yes
Warranty	1-year limited
Bag Dimensions (L x W x D)	20 x 20 x 50
Package Weight (lbs.)	25
Package Type	Multi-pack
Package Count	7
Multi-Pack Quantity	5
Total Package Quantity	35
UNSPSC	11162400

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Frequently Asked Questions (FAQ):

Q: How much area does one package cover?
A: 67.81 square feet per package.

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Q: Is this insulation faced?
A: No, these are unfaced fiberglass batts without a vapor retarder.

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Q: What framing is it designed for?
A: Precut for 2x6 wood-stud walls with 16-in on-center spacing.

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Q: What is the thickness and R-value?
A: Batts are 5.5 inches thick with an R-21 thermal resistance.

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Q: Is it certified for indoor air quality?
A: Yes—GREENGUARD Gold certified and SCS recycled content certified; also formaldehyde-free.

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Quiet Strength for Modern Walls

These sleek, unfaced batts slip into 2x6 cavities like they were tailor-made, wrapping your rooms in a hush of comfort. I love the crisp, bright fibers—an understated detail that speaks to clean, contemporary builds. Pair with smooth drywall and pale oak trim to heighten the serene, gallery-like feel. It’s a quiet luxury essential—performance insulation that elevates how your home looks, feels, and lives.

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Upgrade your walls with R-21 performance today and enjoy a quieter, more energy-efficient home.