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Ships within 48 hours · Estimated delivery Sep 23 - Sep 28
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Description
Johns Manville R-21 Unfaced Fiberglass Batt Wall Insulation, 67.81-sq ft Coverage (15-in W x 93-in L) – U1321SR 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. Key Features: Designed for 2x6 Walls: Precut 15 in x 93 in batts fit 16 in OC wood studs for fast installation Thermal +
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.
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
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 |
Frequently Asked Questions (FAQ):
Q: How much area does one package cover?
A: 67.81 square feet per package.
Q: Is this insulation faced?
A: No, these are unfaced fiberglass batts without a vapor retarder.
Q: What framing is it designed for?
A: Precut for 2x6 wood-stud walls with 16-in on-center spacing.
Q: What is the thickness and R-value?
A: Batts are 5.5 inches thick with an R-21 thermal resistance.
Q: Is it certified for indoor air quality?
A: Yes—GREENGUARD Gold certified and SCS recycled content certified; also formaldehyde-free.
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.
Upgrade your walls with R-21 performance today and enjoy a quieter, more energy-efficient home.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy