3M™ Thinsulate™ Acoustic Insulation SM400L
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3M™ Thinsulate™ Acoustic Insulation SM400L
3M™ Thinsulate™ Acoustic Insulation is perfect for manufacturers, upfitters, and custom automotive professionals looking to elevate the acoustic comfort of their builds. 3M™ Thinsulate™ Acoustic Insulation is engineered to deliver outstanding sound and thermal insulation in wide range of applications like vans, semi trucks, sleeper cabs, RVs and more! Designed for high-performance noise control, this insulation is ideal for use in automotive interiors, including door panels, headliners, wheel wells, pillars, and instrument panels.
Features
- Superior sound absorption for enhanced noise reduction
- Excellent thermal insulation
- Hydrophobic fibers resist moisture, mold, and mildew
- Versatile use in automotive and other industrial acoustic applications
- Lightweight, durable, and conformable for easy installation
- Proudly made in the USA
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
Thermal Insulation
Vehicle Square Footage Calculator
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