Knauf Insulation EcoBatt R-13 Unfaced Fiberglass Insulation Batt, 3-1/2 in x 15 in x 105 in, 131.25 sq ftEcoBatt R 13 Unfaced Fiberglass Batt Insulation, 15 in x 105 in Knauf Insulation EcoBatt R 13 unfaced fiberglass batts deliver thermal and acoustic performance for walls, floors, and ceilings. Sized 3 1 2 in x 15 in x 105 in to fit 16 in o. c. framing, each bag covers 131. 25 sq ft and features lowdust, resilient fibers made with ECOSE technology. Key Features: Thermal Comfort: R 13 batts help improve energy efficiency in 2x4 walls and other cavities.

EcoBatt R-13 Unfaced Fiberglass Batt Insulation, 15 in x 105 in

Knauf Insulation EcoBatt R-13 unfaced fiberglass batts deliver thermal and acoustic performance for walls, floors, and ceilings. Sized 3-1/2 in x 15 in x 105 in to fit 16 in o.c. framing, each bag covers 131.25 sq ft and features low‑dust, resilient fibers made with ECOSE technology.

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Key Features:

• Thermal Comfort: R-13 batts help improve energy efficiency in 2x4 walls and other cavities.
• Low Dust, Easy Install: Resilient fibers cut cleanly and recover to full thickness for a snug fit.
• Acoustic Control: Reduces sound transmission in interior partitions and floor/ceiling assemblies.
• Sustainable Binder: Made with plant‑based ECOSE technology; no added formaldehyde.
• Sized for Speed: 15 in width and 105 in length streamline installation in standard stud bays.

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Specifications Table:

Specification	Details
Insulation type	Fiberglass batt
Facing	Unfaced
R-Value	R-13
Width	15 in
Length	105 in
Thickness	3-1/2 in
Coverage area	131.25 sq ft
Series	X17VAK
Use locations	Attic, Basement, Ceiling, Crawlspace, Wall, Floor
Quantity in master bag	15
Item code	R13UNF15105131

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Frequently Asked Questions (FAQ):

Q: Is this insulation faced or unfaced?
A: Unfaced; vapor retarder is not included.

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Q: What framing cavities does it fit?
A: Designed for 2x4 (3-1/2 in) cavities and 15 in wide stud bays (16 in on center).

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Q: How much area does one package cover?
A: 131.25 square feet per bag.

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Q: Where can it be used?
A: Suitable for walls, floors, ceilings, attics, basements, and crawlspaces as appropriate for R-13 applications.

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Q: Does it contain formaldehyde?
A: Manufactured with ECOSE technology, a plant‑based binder with no added formaldehyde.

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Quiet, Cozy, Effortless Performance

EcoBatt R-13 slips into a space like a tailored layer, softening the echo and sealing in comfort. Its unfaced profile and resilient fibers create a clean, seamless look behind the walls. Pair it with crisp gypsum board and streamlined trim for a refined envelope that feels both quiet and composed. It’s a discreet luxury—performance you feel every day without ever seeing it.

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Upgrade your walls with EcoBatt R-13 today for quieter rooms and year‑round comfort in one easy install.