Hey, if you're dealing with stuffy attics, hot greenhouses, or just need better airflow in your workshop, these YAGEANNL shutter vents are total game-changers! They're made from heavy-duty aluminum that won't rust on you, and the coolest part is how they work - the 10 blades automatically open when there's airflow and close by gravity when things calm down. No electricity needed, just pure physics doing its thing! Each vent measures 23.6 x 15.7 x 3.9 inches (that's 60x40x10cm for my metric friends), and you get two in the pack. They completely seal shut to keep out rain, wind, and pesky insects, but open up when you need fresh air circulating. Super easy to install on windows, attic vents, or greenhouse walls. Just a heads up - these are just the shutter units themselves, no fans or motors included. But honestly, for natural ventilation that actually works? These things are brilliant. Your space will breathe better, stay drier, and just feel more comfortable overall.
Free 30-day returns 
Free 30-day returns
