R-11 Unfaced Fiberglass Wall Batt Insulation, 155-sq ft
Formaldehyde-free Johns Manville unfaced fiberglass batts deliver R-11 thermal performance and sound control for 2x4 wood-stud walls. Precut 15-in x 93-in batts install easily and are ideal for improving energy efficiency in basements and interior walls.
Key Features:
- Thermal & Acoustic Performance: R-11 batts reduce heat transfer and dampen sound in interior wall assemblies
- Easy Fit for 2x4 Walls: Precut 15-in x 93-in batts sized for 8-ft walls with 16-in on-center stud spacing
- Unfaced Design: No vapor barriercompatible with adding to existing insulation and flexible for various climates
- 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
Specifications Table:
| Specification | Details |
| Coverage Area (Sq. Feet) | 155 |
| Length (Inches) | 93 |
| 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 Basements | Yes |
| For Use in Walls | Yes |
| For Use in Attics | No |
| For Use in Ceilings | No |
| For Use in Crawlspaces | No |
| For Use in Doors | No |
| For Use in Duct | No |
| For Use in Electrical | No |
| For Use in Floors | 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 |
| Formaldehyde Free | Yes |
| Framing Type | Wood studs |
| Insulation Type | Fiberglass |
| Maximum R-Value | 11 |
| R-Value per Inch | 3.1429 |
| Stud Spacing (Inches) | 16 |
| Sound Barrier | Yes |
| Vapor Retardant | No |
| ENERGY STAR Certified | Yes |
| GREENGUARD Gold Certified | Yes |
| Bag Dimensions (L x W x D) | 15.5 x 20 x 49 |
| Package Weight (lbs.) | 24.18 |
| Package Count | 16 |
| Multi-Pack Quantity | 5 |
| Package Type | Multi-pack |
| Total Package Quantity | 80 |
| Warranty | 1-year limited |
| UNSPSC | 11162400 |
| CA Residents: Prop 65 Warning(s) | No |
Frequently Asked Questions (FAQ):
Q: How many batts are in the package and what area will it cover?
A: The multi-pack contains 16 precut batts and covers 155 sq ft.
Q: Where can I use this insulation?
A: Designed for 2x4 wood-stud walls; suitable for basements and interior wall sound control. Not intended for attics, ceilings, floors, or crawlspaces.
Q: Do I need a separate vapor barrier?
A: These batts are unfaced and do not include a vapor retarder. Follow local code requirements for vapor control in your climate zone.
Q: Is it safe for indoor air quality?
A: Yes. It is formaldehyde-free and GREENGUARD Gold certified for indoor air quality, with SCS recycled content certification.
Q: How is it installed?
A: Press batts into wall cavities between studs; trimming may be needed for exact fit. Ensure full cavity fill without compression.
Quiet Comfort for Everyday Living
These crisp, unfaced batts slip into wall cavities like tailored linens, instantly softening the acoustic profile of a room. Their R-11 performance brings balanced warmth while the clean, formaldehydefree fibers keep interiors feeling fresh. Use them in basements and shared walls to create serene zones and polished transitions. A refined essential for homes that value quiet, efficient luxury.
Upgrade your walls with Johns Manville R-11 batts today for quieter rooms and improved energy efficiency.
