For all orders exceeding a value of 100USD shipping is offered for free.

Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.

Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.

Easy Installation The greenhouse winder opener cylinder could be clamped onto or screwed onto your greenhouse frame, easy to install , and perfect for your greenhouse window.

Excellent Performance This is a replacement cylinder for automatic window opener, high sensitive, automatic respond to weather changes, so you don't need to stay near the greenhouse.

Solar Energy Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops. The window opener will be very environmental and co2-friendly throughout its whole lifetime.

Wide Applicability Great for most greenhouse to open or close window automatically. Time and labor saving, also can supply a better temperature condition of plant's growth.

High Quality Materials Our greenhouse winder opener cylinder is made of quality material, durable and convenient to use, and can supply a better temperature condition of plant's growth.