{"product_id":"sigma-automatic-roof-vent-1","title":"Sigma Automatic Roof Vent","description":"\u003cp\u003e\u003cstrong\u003ePlease note: this window only fits \u003ca href=\"https:\/\/plantagreenhouses.com\/collections\/sigma\" target=\"_blank\" data-mce-href=\"https:\/\/plantagreenhouses.com\/collections\/sigma\"\u003eSigma Greenhouse\u003c\/a\u003e models. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSupercharge your Sigma Greenhouse with the Planta Sigma Automatic Roof Vent. Improve air circulation by bringing in the fresh outside breeze, \u003cstrong\u003ekeeping your plants healthy and disease-free.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe automatic roof vent is heat-activated, which requires no electrical power or programming. This function ensures that hot air escapes during the day, \u003cstrong\u003epreventing shrivelling or withering of your plants. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe number of windows recommended depends on the size of the greenhouse, the environment you’re located, and the types of plants that you’re planning on growing. The following numbers, however, are good a starting point:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSigma Urban\u003c\/strong\u003e (10x13): 2-4 windows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSigma 20\u003c\/strong\u003e (10x19.5): 4-6 windows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSigma 26\u003c\/strong\u003e (10x26): 6 windows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSigma 32\u003c\/strong\u003e (10x32): 6-8 windows\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe recommend installing an even number of ventilation windows on either side of the greenhouse for optimum airflow.\u003c\/p\u003e\n\u003ch3\u003eTechnical data:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 3 ft wide by 1.4 ft tall (91.4 cm by 42.6 cm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum window opening:\u003c\/strong\u003e approximately 45cm (17 23\/32 in) depending on adjustment and load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStart opening temperature:\u003c\/strong\u003e 17 °C-25°C (62,60°F-77°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum opening temperature\u003c\/strong\u003e: 30 °C (86°F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0069\/5854\/6980\/files\/IMG_667413_480x480.png?v=1647973989\" style=\"display: block; margin-left: auto; margin-right: auto;\" width=\"569\" height=\"344\"\u003e\u003c\/p\u003e","brand":"Planta Greenhouses","offers":[{"title":"Default Title","offer_id":48387575382237,"sku":"Sigma Automatic Window","price":169.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/7843\/7853\/files\/Beta_Greenhouse_Automatic_Window_1_81e09e75-2d94-4ebd-b601-40513edaea37.jpg?v=1786982356","url":"https:\/\/novagreenhouses.com\/products\/sigma-automatic-roof-vent-1","provider":"Nova Greenhouses","version":"1.0","type":"link"}