The spring closing design allows it to be closed tight shut when ventilation is not required.
Polytunnel roof vent.
These roof vents can be incorporated in to your new polytunnel design or retrospectively fitted to existing polytunnels.
Used to release excessive heat build up in your polytunnel without having to open the doors.
Used to release excessive heat build up in your polytunnel without having to open the doors.
Polytunnel roof vent easy to install roof vent with simple pull cord operation.
Find this pin and more on greenhouseby tina smith.
Controlling temperature and humidity is critical though and i ve tackled the problem of polytunnel ventilation by installing a solar powered cooling system.
The spring closing design allows it to be closed tight shut when ventilation is not required.
This roof vent which can be easily installed with support bars.
These roof vents can be incorporated into your new polytunnel design or retrospectively fitted to existing polytunnels.
Stabilized polycarbonate provides un matched clarity for maximum light transmission while the aluminum construction ensures long service life.
Mechanically operated on a rack pinion system running off a 24vdc motor.
Manually operated by a simple pull cord with a spring closing design to allow it to be closed tight when not in use.
Polytunnel roof vent easy to install roof vent with simple pull cord operation.
Mechanically operated on a rack pinion system running off a 24vdc motor.
The spring closing design allows it to be closed tight shut when ventilation is not required.
Weighing only 8 5 lbs the roof vent uses standard wire lock and channel to attach securely to greenhouse poly film.
The ultimate polytunnel roof ventilation system for multi span polytunnels.
Using a simple pull cord operation it can be open and closed manually.
Polytunnel roof vent the ultimate polytunnel roof ventilation system for multi span polytunnels.
Easy to install roof vent with simple pull cord operation.
Polytunnels like greenhouses can get very hot in sunny weather.
Used to release excessive heat build up in your polytunnel without having to open the doors.