R-21 Unfaced Fiberglass Wall Batt Insulation

JM R-21 unfaced fiberglass batts help reduce heat loss and improve comfort in 2x6 wood-stud wall cavities. Precut 23 in x 93 in batts are designed for 24 in on-center framing and provide 103.97 sq ft of coverage per pack.

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Key Features:

• Thermal + Sound Performance: R-21 insulation helps manage heat flow and provides sound control in interior and exterior walls.
• Sized for 2x6 Walls: Precut 23 in x 93 in batts fit standard 24 in on-center wood framing for typical 8 ft wall applications.
• Simple Friction-Fit Install: Unfaced batts press into place between studs and can be added over existing insulation where appropriate.
• Formaldehyde-Free and Indoor Air Quality Certified: Formaldehyde-free product with GREENGUARD Gold certification listed.
• Durable, Noncorrosive Material: Fiberglass won’t rot, mildew, or deteriorate and is noncorrosive to pipes, wiring, and metal components.

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Specifications Table:

Specification	Details
Brand	JM
Insulation Type	Fiberglass
Product Form	Batt
Faced/Unfaced	Unfaced
R-Value	R-21
R-Value per Inch	3.8182
Thickness	5.5 in
Width	23 in
Length	93 in
Coverage Area	103.97 sq ft
Pack Quantity (Pieces)	7
Package Type	Individual pack
Total Package Quantity	7
Framing Type	Wood studs
Stud Spacing	24 in on-center
Fits 2 x 6 Walls	Yes
Fits 2 x 4 Walls	No
Sound Barrier	Yes
Formaldehyde Free	Yes
Vapor Retardant	No
ENERGY STAR Certified	Yes
GREENGUARD Gold Certified	Yes
SCS Recycled Content Certification	Yes
For Use in Walls	Yes
For Use in Basements	Yes
For Use in Crawlspaces	No
For Use in Ceilings	No
For Use in Attics	No
Bag Dimensions (L x W x D)	23.5 x 20 x 49
Package Weight	44.44 lb
UNSPSC	11162400

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Frequently Asked Questions (FAQ):

Q: What wall framing does this insulation fit?
A: It’s sized for 2x6 walls with 24-inch on-center wood-stud framing (23-inch-wide batts).

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Q: Does this product have a facing or vapor retarder?
A: No—this is unfaced insulation and it does not include a vapor retarder.

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Q: How many pieces and how much area does a pack cover?
A: One pack contains 7 batts and covers 103.97 sq ft.

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Q: Can it help with noise reduction?
A: Yes—this product is listed as a sound barrier and is intended to help control unwanted noise in wall assemblies.

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

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Quiet Comfort, Seamlessly Built In

There’s a special kind of luxury that’s felt, not flaunted—rooms that hold warmth, soften sound, and instantly feel composed. These unfaced fiberglass batts tuck cleanly into 2x6 wall cavities, creating a calm, insulated envelope that lets your finishes shine. Use them to make bedrooms and media spaces feel more hushed and intentional, or to bring basement walls up to a more livable, refined comfort. It’s the invisible layer that elevates everyday living.

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Upgrade your wall cavities with JM R-21 unfaced batts for a warmer, quieter home with an easy friction-fit installation.