English 
GREENHOUSE WINDOW OPENER PRIMAVENT PRIMATERRA
PRIMAVENT PRIMATERRA Automatic Greenhouse Vent Opener, Hydraulic, Aluminium
Greenhouse ventilation that runs on heat alone, with no power supply.
The PRIMAVENT PRIMATERRA vent opener lifts and closes your greenhouse window on its own, driven by a heat-sensitive hydraulic cylinder. It reacts between 17 °C and 25 °C and handles vents weighing up to 7 kg, with no wiring or power needed.
Automatic venting between 17 °C and 25 °C
The hydraulic cylinder expands as the air warms and raises the vent up to 30º, then draws it back down as temperatures fall. Seedlings stay protected from overheating even on days when nobody visits the garden.
Aluminium build for vents up to 7 kg
All load-bearing parts are aluminium, a material that copes with the constant humidity and temperature swings inside a greenhouse. The lifting force covers standard vents glazed with polycarbonate or glass.
Twin spring, upgradeable when needed
The twin spring is matched to lighter windows and holds them firmly shut once the air cools. For a heavier vent, the spring can be swapped for a stronger one.
Fitting without special tools
The compact body fits into the narrow profiles around a roof vent. It bolts to the frame and the sash and starts working as soon as it is adjusted.
Specifications
General
Performance
Construction
| Brand | PRIMAVENT |
| MODEL | PRIMATERRA |
| CONSTRUCTION | АЛУМИНИЙ |
| EAN | 3800233899443 |