4in Pyramidal Polyurethane Foam Anechoic Chamber Absorber Tile
Composition: carbon and fire retardant chemical loaded polyurethane foam
Working Temperature: -85°F to 176°F (-50°C to +80°C)
Environment: Indoor Use
Fire Retardancy: Certified Independent Lab Test Data to NRL 8093 Tests 1, 2 & 3
Optional Test Data For UL94 and DIN 4102-B2
Power Typical Power Handling: 1kW/m²
Dimensions
| A | B | C | D | E/F | |
|---|---|---|---|---|---|
| Total Height | Pyramid Base | Pyramid Height | Base Height | Base Size | # Pyramids |
|
4in 101.6mm |
1.26in 32mm |
3.07in 78mm |
.98in 25mm |
20x20in |
196 per Absorber |
Reflectivities
| Reflectivity | Normal frequency (GHz) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.1 Ghz | 0.2 Ghz | 0.3 Ghz | 0.5 Ghz | 1.5 Ghz | 3 Ghz | 5 Ghz | 10 Ghz | 15 Ghz | 40 Ghz | |
| Reflectivity (-dB) at normal incidence | - | - | - | - | 15 | 30 | 35 | 40 | 45 | 50 |
Frequently Asked Questions
What frequency range does the 4in absorber cover?
The 4in absorber provides effective absorption starting from 1 GHz, with -20 dB reflectivity at 1 GHz improving to -50 dB at 40 GHz.
How quickly does the 4in absorber ship?
The 4in absorber is in stock and ships within 1-2 business days from our California warehouse.
What are dB Absorber pyramidal absorbers made of?
Our absorbers are made of carbon and fire retardant chemical loaded polyurethane foam, volumetrically loaded for consistent electromagnetic properties throughout the material.
Are your absorbers fire rated?
Yes, all our absorbers are certified to NRL 8093 Tests 1, 2 & 3 fire safety standards. Optional test data is available for UL94 and DIN 4102-B2 compliance.
What is the operating temperature range?
Our absorbers operate from -85°F to 176°F (-50°C to +80°C), suitable for standard indoor testing environments.
