WonderVent 140 Premier
| Thickness (mm) | 0.6 |
| Mass per unit area (g/m2) | 140 |
| Roll size (length/width) | 1×50; 1.5×50 |
| Colour (upper/lower) | black/black |
| Tensile strength (longitudinal/transverse) | 305/220 |
| Elongation (longitudinal/transverse (%)) | 60/100 |
| Tear resistnace (longitudinal/transverse (N)) | 195/295 |
| Watertightness (unaged/aged) | W1/W1 |
| Water vapour transmission (Sd)(m) | 0.02 |