Johns Manville R-30 Unfaced Fiberglass Batt Insulation, 16 in x 48 in, 58.66 sq ftR 30 Unfaced Fiberglass Batt Insulation (16" x 48", 58. 66 sq ft) This R 30 unfaced fiberglass batt insulation is pre cut for 16 in on center wood framing to help improve energy efficiency and reduce noise. Designed for attic and ceiling applications, it presses in place between joists for a fast, straightforward install. Key Features: High R Value Performance: R 30 fiberglass batts help reduce heat transfer for improved energy efficiency. Easy Fit

R-30 Unfaced Fiberglass Batt Insulation (16" x 48", 58.66 sq ft)

This R-30 unfaced fiberglass batt insulation is pre-cut for 16-in on-center wood framing to help improve energy efficiency and reduce noise. Designed for attic and ceiling applications, it presses in place between joists for a fast, straightforward install.

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Key Features:

• High R-Value Performance: R-30 fiberglass batts help reduce heat transfer for improved energy efficiency.
• Easy Fit for Standard Framing: Pre-cut 48-in batts sized for 16-in on-center wood-joist spacing.
• Sound Control: Built-in sound barrier helps dampen noise between spaces.
• Formaldehyde-Free & Indoor Air Quality Certified: GREENGUARD Gold certified and labeled formaldehyde-free.
• Durable, Noncorrosive Material: Won’t rot or mildew and is noncorrosive to pipes, wiring, and metal components.

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Specifications Table:

Specification	Details
Maximum R-Value	30
Insulation Type	Fiberglass
Faced/Unfaced	Unfaced
Coverage Area (Sq. Feet)	58.66
Width (Inches)	16
Length (Inches)	48
Thickness (Inches)	10.25
Stud Spacing (Inches)	16
Framing Type	Wood studs
Package Type	Individual pack
Package Count	11
Total Package Quantity	11
Package Weight (lbs.)	22.76
Bag Dimensions (L x W x D)	16.5 x 20 x 50
R-Value per Inch	2.9268
Formaldehyde Free	Yes
Sound Barrier	Yes
Vapor Retardant	No
ENERGY STAR Certified	Yes
GREENGUARD Gold Certified	Yes
CA Residents: Prop 65 Warning(s)	No
For Use in Attics	Yes
For Use in Ceilings	Yes
For Use in Basements	Yes
For Use in Floors	Yes
For Use in Crawlspaces	No
For Use in Walls	No
For Use in Doors	No
For Use in Duct	No
For Use in Electrical	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
Fits 2 x 4 Walls	No
Fits 2 x 6 Walls	No
UNSPSC	11162400

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Frequently Asked Questions (FAQ):

Q: Where can this insulation be used?
A: It’s intended for wood-framed applications such as attics, ceilings, basements, and floors (not for walls, crawlspaces, ducts, doors, or windows).

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

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Q: How do I install these batts?
A: They are designed to press-fit between 16-in on-center joists/studs; cut as needed around obstructions for a snug fit.

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Q: How much area does one pack cover?
A: One pack covers 58.66 sq ft and includes 11 pieces.

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

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Quiet warmth, beautifully effortless.

There’s a certain luxury in a home that feels serene—warm in winter, cool in summer, and hushed in all the right ways. These R-30 unfaced fiberglass batts slip neatly into standard framing, creating an invisible layer of comfort that elevates daily living. Use them to refine an attic or ceiling renovation so the rooms below feel more cocooned and calm. It’s the kind of behind-the-scenes upgrade that makes a space feel undeniably polished and indulgent.

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Upgrade your attic comfort and quiet with R-30 unfaced fiberglass batts sized for quick, standard-fit installation.