{"product_id":"grandio-automatic-roof-opener","title":"Automatic Roof Window Opener for Grandio Greenhouse","description":"\u003cp\u003e \u003c\/p\u003e \u003ch3\u003e\u003cstrong\u003eDESCRIPTION\u003c\/strong\u003e\u003c\/h3\u003e \u003cp class=\"p1\"\u003e\u003cspan\u003eAutomatically opens and closes the roof vent window when temperature changes. The opener has a metal cylinder containing a mineral which expands when heated. This pushes a piston that opens the vent. As the temperature cools, the mineral shrinks and a spring closes the vent and resets the piston. The opening and closing of the vent is gradual allowing just the right amount of air flow for cooling.\u003c\/span\u003e\u003c\/p\u003e \u003cp class=\"p1\"\u003e\u003cspan\u003e\u003c\/span\u003eSKU: AUTO-ROOF\u003c\/p\u003e \u003cul\u003e\u003c\/ul\u003e \u003cul\u003e\u003c\/ul\u003e \u003ch3\u003e\u003cstrong\u003eSPEC\u003c\/strong\u003e\u003c\/h3\u003e \u003cp\u003eWeight: 1.0 LB\u003c\/p\u003e","brand":"Grandio","offers":[{"title":"Default Title","offer_id":54970821083475,"sku":"AUTO-ROOF","price":67.0,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/progradewarehouse.com\/products\/grandio-automatic-roof-opener","provider":"PRO GRADE WAREHOUSE","version":"1.0","type":"link"}