Sumnacon Solar Heat Sensitive Automatic Greenhouse Vent Opener Auto Vent Kit for all Palram Greenhouses (Single Spring Vent Opener)

Description

Description: Replaces worn out Piston Rod from one or more of your Vent Window Openers. The core technology is the hydraulic cylinder that contains a plant-based wax. This special designed cylinder containing this wax, works as the greenhouse window openers thermostat, thus there is no need for electrical power supply You don't need any electricity in your greenhouse; the window opener will be very environmental throughout its whole lifetime Specifications: - Fully open distance: 45cm / 18" - Start to open at: 16°- 25°/ 60.8°-77F - Fully open temperature: about 30°/ 86℉(depending on adjustment and load) - Maximum open weight 7kg (151b) 7kg/15lb .(if more than 7kg/15lb,we recommend you to use two window opener). Note: - Do not use the automatic green house window opener at anywhere the temperature will exceed 50°/ 122℉. - Please make sure your greenhouse window can be opened freely at least 45cm (18"). - Ensure that your greenhouse window is able to open and is not obstructed otherwise damage could occur. Package included: - 1X Sumnacon Hydraulic Cylinder Replacement