{"product_id":"exhaust-fan-12","title":"Exhaust Fan 12\" for Riga Greenhouses","description":"\u003cp\u003eThe \u003cstrong\u003eRiga 12\" Exhaust Fan\u003c\/strong\u003e is a compact, high-efficiency ventilation solution designed for small to mid-size hobby greenhouses. Recommended for \u003cstrong\u003eRiga 2, 3, and 4\u003c\/strong\u003e models, it actively exhausts hot air and excess humidity to keep your growing environment stable and healthy year-round.\u003c\/p\u003e\n\u003ch2\u003eWhy Proper Greenhouse Ventilation Matters\u003c\/h2\u003e\n\u003cp\u003eWithout active airflow, greenhouse temperatures can climb 20–30°F above outdoor levels on sunny days, triggering heat stress, fungal disease, and crop loss. Mounting an exhaust fan high on the back wall creates a negative-pressure draw that pulls fresh air through intake vents at the opposite end — the most effective ventilation strategy for structures under 100 sq ft.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12\" blade diameter\u003c\/strong\u003e — right-sized CFM airflow for Riga 2, 3, and 4 footprints\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequires a 12.25\" × 12.25\" wall opening\u003c\/strong\u003e — fits standard Riga and Victorian J-Vic panel cutouts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-wired with a 9-foot power cord\u003c\/strong\u003e — plug-and-play installation, no electrician required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-wall placement\u003c\/strong\u003e — installs near the ridge for maximum heat and humidity extraction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with a thermostat controller\u003c\/strong\u003e — add automatic temperature management for hands-free climate control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatible Greenhouse Models\u003c\/h2\u003e\n\u003cp\u003eThis fan is sized and rated for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRiga 2, Riga 3, and Riga 4 greenhouses\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor larger Riga and Victorian models, see our \u003ca href=\"https:\/\/riga-greenhouses.myshopify.com\/products\/exhaust-fan-16\" title='16\" Exhaust Fan'\u003e16\" Exhaust Fan\u003c\/a\u003e and \u003ca href=\"https:\/\/riga-greenhouses.myshopify.com\/products\/exhaust-fan-20\" title='20\" Exhaust Fan'\u003e20\" Exhaust Fan\u003c\/a\u003e options.\u003c\/p\u003e\n\u003ch2\u003eInstallation Overview\u003c\/h2\u003e\n\u003cp\u003eMount the fan high on the back (leeward) wall of your greenhouse. Pair with passive intake vents or louvers on the front wall near ground level. Connect to a thermostat controller (sold separately) to automate on\/off cycling based on your target temperature threshold.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat size opening does the 12\" exhaust fan require?\u003c\/strong\u003e\u003cbr\u003eThe fan requires a 12.25\" × 12.25\" square opening in your greenhouse wall panel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fan need to be hardwired?\u003c\/strong\u003e\u003cbr\u003eNo. It comes pre-wired with a 9-foot power cord and plugs into a standard outlet.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this fan with a thermostat?\u003c\/strong\u003e\u003cbr\u003eYes. It is compatible with standard greenhouse thermostat controllers for automatic temperature-based operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich Riga greenhouse models does this fit?\u003c\/strong\u003e\u003cbr\u003eThis fan is recommended for Riga 2, Riga 3, and Riga 4. For larger Riga models, see the 16\" or 20\" fan options.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 12\" and 16\" exhaust fans?\u003c\/strong\u003e\u003cbr\u003eThe 12\" fan is sized for smaller greenhouse footprints (Riga 2–4 and Victorian J-Vic\/VI), while the 16\" fan is designed for the larger Riga 5 and Victorian VI 34–46 models. Choose based on your greenhouse model for optimal airflow.\u003c\/p\u003e","brand":"Exaco","offers":[{"title":"Default Title","offer_id":59770561069342,"sku":"VES 12 C","price":325.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1078\/1802\/5246\/files\/Exhaust_1.webp?v=1786648234","url":"https:\/\/rigagreenhousekit.com\/products\/exhaust-fan-12","provider":"Riga Greenhouses","version":"1.0","type":"link"}