J. Orbesen Teknik APS

Liberty Automatic Louver Opener

For automatic ventilation - C3533 The Sesam Liberty solar-powered control will open and close a louver window as temperatures change, enhancing airflow through the greenhouse as needed. The operating...

Megavent Replacement Cylinder

For use with Megavent solar-powered opener (C3530) from Orbesen Teknik in Denmark. Cylinder color is black, 1" diameter and smooth.

Megavent Control, aluminum color

With a 26-lb. lifting capacity, twice that of standard solar openers, the Megavent is the best choice for heavier roof vents, side windows, and skylights.A built-in hydraulic damper prevents the vent...

Gigavent Replacement Cylinder

For use with Gigavent Control C3526 from Orbesen Teknik in Denmark. Cylinder color is black with ridges.  

Gigavent Control

Heaviest lifting capacity The ultimate solar vent control! Opens and closes vents weighing up to 65 lbs. A hydraulic safety damper prevents gusty winds from damaging the vent. Adjustable...

Univent Automatic Vent Opener

Multiple uses - C3515 This unique solar vent control will open and close roof vents, a cold frame lid, top-hinged wall vents, or even the greenhouse door. It features two closing springs for extra...

Replacement Cylinder for Orbesen Teknik Standard Solar Openers

For use with C3515 Univent, 3527 Optivent, 3521 Sesam Spiro, 3511 Sesam Solarlift, C4000 Ventomax, and C3533 Liberty Louver Solar-Powered Vent Openers from Denmark. NOTE:  Cylinder color is black,...