TECHNICAL BULLETIN: Resistance to Airflow for Polyfoam Filter Media
Date: 4th June 2018
| Resistance @ 1.5m/s | ||||
| Type | 6mm | 12mm | 25mm | 50mm |
| 10PPI | Not Available |
9 Pa | 15 Pa | 35 Pa |
| 20PPI | 7 Pa | 13 Pa | 27 Pa | 55 Pa |
| 30PPI | 12 Pa | 24 Pa | 45 Pa | 85 Pa |
| 45PPI | 18 Pa | 40 Pa | 79 Pa | 155 Pa |
| 60PPI | 35 Pa | 80 Pa | 125 Pa | 262 Pa |