Deceptor Pro II: In Cabin Adjustable Venting Bias System Diverter Valve.

132 Lbs Capacity Heavy Duty Automatic Greenhouse Vent Opener Solar Power Auto Hothouse Window Opener Greenhouse Roof Vent Kit Greenhouse Accessories Perfect for Heavy Windows
$ 34.84
2 Pack Aluminum Greenhouse Automatic Window Opener, Solar Thermal Roof Window Opening Kit, Automatic Roof Vent Opener, Greenhouse Accessories (Double Spring)
$ 7.25
Amylove 2 Pcs Dual Spring Automatic Roof Vent Opener Greenhouse Accessories Solar Greenhouse Heater Sensitive Ventilation Kit Automatic Window Vent Opener Replacement for Gardening
$ 14.57
Auto Vent Opener Automatic Greenhouse Window Opener Cylinder Roof Vent Opener Autovent Kit Solar Heat Sensitive Agriculture Gardening Tools Automatic Greenhouses Supplies (Single Spring Lifts 15 Lbs)
$ 8.23
Auto Vent Opener Solar Heat Sensitive Automatic Greenhouse Window Opener Auto Vent Kit for Garden Greenhouses Roof Ventilation Lifts 30 Lbs(Double Spring Vent Opener)
$ 7.17
Automatic Greenhouse Vent Opener Solar Powered Auto Hothouse Window Opener Wooden Cold Frame Roof Vent Opening Kit Greenhouse Accessories-(Lifts 15.4 Lbs,Double Spring)
$ 14.39
Automatic Greenhouse Vent Opener with Two Springs Solar Powered Auto Window Opener for Hothouse&Cold Frame Greenhouse Acessories-Lifts 15.4 Lbs
$ 14.39
Automatic Greenhouse Window Opener Auto Vent Opener Roof Vent Opener Greenhouse Accessories Solar Window Louvre Thread Opener Auto Vent Kit Agriculture Gardening Tools Greenhouses Supplies
$ 11.69
Automatic Greenhouse Window Vent Opener Replacement Compatible with Cylinder
$ 9.89
CALIDAKA Greenhouse Hand Crank Winch Self Locking Sidewall Manual Crank Winch Agricultural Sidewall Film Manual Roll Up Lifting Device Machine Window Opener for Greenhouse Ventilation Ranch
$ 10.34
CHANGE MOORE Auto Vent Opener Automatic Greenhouse 1Pack Window Opener Roof Vent Opener Auto Vent Kit Sensitive Gardening Tools Automatic Greenhouses Supplies (Single Spring Up to 33lbs)
$ 11.24
CHANGE MOORE Auto Vent Opener Automatic Greenhouse Window Opener Roof Vent Opener Auto Vent Kit Sensitive Gardening Tools Automatic Greenhouses Supplies (Single Spring Up to 33lbs)
$ 19.80