Vent Openers
3515
Univent Automatic Vent Opener
List price: $52.95
$49.95
This unique solar vent control will open and close roof vents, a cold frame lid, top-hinged wall vents, or even the greenhou...
3527
Optivent Automatic Roof Vent Opener
List price: $52.00
$49.95
This streamlined, solar-powered, vent opener fits very close to the roof, up out of the way. Starting temperature is easy to ...
3533
Liberty Louver Opener
$44.95
This solar-powered control will open and close a louver window as temperatures change, enhancing air flow through the greenho...
3503
Bayliss MK7 Triple Spring Vent Opener
$69.95
The Bayliss Triple Spring solar vent opener is the best choice for top hinged wall vents. It is also recommended for roof ven...
3505
Bayliss MK7 Orchid Vent Opener
$79.95
This Bayliss orchid solar vent opener control operates at a higher temperature than other similar openers, allowing the green...
3509
Bayliss MK7 Hydraulicheck Vent Opener
$116.00
The Bayliss Hydraulicheck solar vent opener is the best choice for large roof vents and side-hinged wall vents. A built-in hy...
3540W
Bayliss MK7 Super Vent Opener
$198.00
This larger, heavy-duty Bayliss Super solar vent opener is suitable for operating heavy, double-glazed greenhouse vents. It c...
3535
Manual Vent Control
$59.95
Lift heavy vents or skylights with this precision-built vent control. Smooth running gears lift and hold vent at any opening ...
