The flexible ventilation insert D-HVK is developed to eliminate the transmission of vibrations from fans or air handling installations to conductors with diameters from 100 to 315 mm. It also serves to partially compensate for temperature deformation in the conductor route. These inserts are effectively used in ventilation systems operating in the temperature range from -40°C to +80°C. The housing material includes galvanized sheet, polyethylene tape and textile polyamide fabric.
| Type measurement | Dimensions, mm | Weight in kg | |
| D | Н | ||
| D-HVK-100 | 100 | 145 | 0,2 |
| D-HVK-125 | 125 | 145 | 0,25 |
| D-HVK-150 | 150 | 145 | 0,3 |
| D-HVK-200 | 200 | 145 | 0,35 |
| D-HVK-250 | 250 | 145 | 0,4 |
| D-HVK-315 | 315 | 145 | 0,5 |
