Riga Automatic Vent Opener brand_healthistraw The Dramm 400AL is made

The Dramm 400AL is made of cast aluminum with 3/4-inch brass hose threads

Optimum combination of nutrients for fruiting vine vegetables

High in calcium (8%)

Fertilization guidelines

resulting in byproducts of water

Riga Automatic Vent Opener brand_healthistraw The Dramm 400AL is madeThe RIGA Automatic Window Opener is an essential tool for maintaining optimal greenhouse conditions without constant supervision. Constructed from durable anodized aluminum, this opener automatically adjusts to temperature changes, ensuring a safe environment for your plants even when you're away. Its quick release arm allows for easy disconnection in extreme weather, adding a layer of protection for your greenhouse. Operating without electricity, it