Polytunnel Roof Vent

When in the closed position the vent sits tightly against the edge of the gutter with a rubber seal creating a draft free.

Polytunnel roof vent.

Mechanically operated on a rack pinion system running off a 24vdc motor. Manually operated by a simple pull cord with a. Being in the roof the hot air rushes out and keeps the temperature reasonable. A polytunnel roof vent lnstalled simply by cutting a 30cm hole in your polytunnel roof then pushing though the polythene is ideal for removing excess heat without opening the doors.

When in the closed position the vent sits tightly against the edge of the. Used to release excessive heat build up in your polytunnel without having to open the doors. The spring closing design allows it to be closed tight shut when ventilation is not required. I considered constructing opening lights and fitting them into the polytunnel roof but quickly ruled that out.

Used to release excessive heat build up in your polytunnel without having to open the doors. Putting any sort of vents into the polytunnel roof would compromise the integrity of the skin. Useful in longer polytunnels where heat can build up in the middle or when. These roof vents can be incorporated in to your new polytunnel design or retrospectively fitted to existing polytunnels.

Useful in longer polytunnels where heat can build up in the middle or when. The ultimate polytunnel roof ventilation system for multi span polytunnels. Easy to install roof vent with simple pull cord operation. Polytunnel roof vent.

The ultimate polytunnel roof ventilation system for multi span polytunnels. Fresh air can quickly become stale and humid which can result in common plant diseases. Easy to install roof vent with simple pull cord operation.