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Electric & Manual roof drives + Control

Automatic vent motor drives
Taylor Built by Redpaths “direct-drive” and “cross-link” automatic motor drive systems bring a sturdy, reliable solution for owners wanting a fuss-free electric vent-drive system.Quality European Ridder and also Viale systems are supplied by Redpath and they come complete with in-built limit switch and optional contactor boxes.  Both single phase and three phase motors may be used with output shafts sized to suit most common building designs.  

Setting the motor drive limit switch

Here is an explainer video Ridder RPD PolyDrive Click here

Automatic roof drive reverse contactor switch box
Switch boxes in 3 Phase or 1 Phase, to take signal from the environmental controller and switch motor drive direction (see below)

Aktiva – Environmental controller
A plug and play environmental greenhouse controller. Outputs / Inputs to control roof ventilation in two directions, wind speed, wind direction and rain sensor input/output, Internal temperature monitoring via aspirating screen thermometer and auto control of roof venting (see below)

Manual vent motor drives
Manual “chain and pulley” drives complete with shaft to suit 1″nominal boor pipe, 35:1 reduction (see below)

Use the enquiry form below and advise us of your needs for the Automatic or manual controls.
Note: Always use a qualified electrician to connect and appropriate RCD protection to suit individual application.  

ridder by Redpath | Palmerston North
  • 1ph $1932.10

  • 3ph $1497.37

Aktiva controller
Environmental Controller

Aktiva R series Base Unit


 Controllers by Redpath | Palmerston North
Environment sensors
  • Controller aktiva r series base unit $4400.00

  • Temperature sensor $341.68

  • Rain sensor $695.00

  • Wind speed sensor Anemometer $498.00

  • Wind direction vane simple $575.00

  • Humidity sensor $1450.00

  • Light sensor $897.00

contactor box by Redpath | Palmerston North
Contactor box
  • 1ph $1290.52

  • 3ph $757.79

chain drive ridge vent gearbox by Redpath | Palmerston North

Incl: 32:1 uni bracket , 9.5m Chain, Shaft, Guide & Bolts


Taylor Built by Redpath Greenhouses
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