B-Stock: 3M™ Thinsulate™ Acoustic Insulation SM400L - 5' (1 Roll) — Save 35%
Available in stock. This product ships in 1 business day.
B-Stock: 3M™ Thinsulate™ Acoustic Insulation SM400L - 5' (1 Roll) — Save 35%
** All B-Stock is first-come-first-serve. **
If you’re looking for our standard material, check out 3M Thinsulate SM400L!
B-Stock Thinsulate SM400L is the same as regular Thinsulate but with some visual defects. These rolls have minor defects. The product still work as intended, so we don't want to throw it away.
B-Stock Features
- 3M Thinsulate SM400L offers superior sound absorption and thermal insulation
- White web fabric with single black scrim
- Great for insulating van walls, headliners, and doors
- Each roll is a nominal 1" thick and 5' wide
- The b stock rolls have minor imperfections
To ensure you're notified when B-Stock becomes available, follow us on: Facebook, Instagram, and subscribe to email notifications at the bottom of the page.
Couldn't load pickup availability
Specs
Specs
| Roll Width | 5' (60") |
| Thickness | 1.00" (Nominal) |
| Density | 1.05 lb/cu ft |
| Weight | 0.10 lb/sq ft |
| Color | White web with single black scrim |
| Composition | Web: 65% polypropylene + 35% polyester Scrim: 100% polypropylene |
| Thermal Resistance (R-value) | 3.8 per inch |
| Field Cutting | Use a fabric cutter with sharp blades or heavy duty fabric scissors |
| Attachment | P329 Spray Adhesive |
** Handling and shipping fibrous materials may slightly compress the material. After hanging or mounting, the material will decompress. **
Material Testing
Material Testing
Noise Reduction Coefficient
| Frequency (Hz) | 125 | 250 | 500 | 1000 | 2000 | 4000 | NRC |
| 3M Thinsulate SM400L | 0.08 | 0.22 | 0.60 | 0.98 | 1.02 | 0.98 | 0.70 |
| 3M Thinsulate SM600L | 0.18 | 0.44 | 0.96 | 1.10 | 0.98 | 0.90 | 0.85 |
| Tested Properties | Testing Method | Performance |
|---|---|---|
| Thermal Resistance | ASTM C518 | R-Value: 3.8 per inch 248°F (tested for 2000 hours) |
| Flammability | FMVSS 302, ISO 3795, DIN75200 | Pass (Self-extinguishing) |
| VOCs | VDA 275 | Pass |
| Water Wicking | SAE J913 | 0mm of water wicked |
| Moisture Absorption | ASTM C1104 | 0.18% weight gain |
| Fungal Growth | ASTM C1338, ASTM G21, ASTM C739 | Pass |
| Bacterial Growth | ASTM G22 | Pass |
| Mold/Mildew Growth | ASTM D3273 | Pass |
Common Product Uses
Common Product Uses
- Van Insulation - door panels, headliner, wheel wells, pillars, and wall panels
- Semi Truck Insulation - door panels, headliner, sleeper cab walls and roof
- RV Insulation - wall panels, roof panels, door panels
- Skoolie Insulation - headliner, wall panels
Resources
Installation Guides
Spec Sheets
Decoupler
OEM Approved
Sound Absorbing
