cannabis greenhouse fan cover

cannabis greenhouse fan cover, do you know the greenhouse for cannabis need 100% blackout?  do you know how to make sure the cooling fan have 100% blackout? 

Our company main products: greenhouses, NFT system , A frame vertical farming , irrigation, and all hydroponic systems.

In USA , Tailan, Canada, cannabis greenhouse is hot sale, there are 2 types design greenhouse is hot selling.

1) 100% blackout with 3 layers PE shading for whole greenhouse.

2)  Double arch double film greenhouse, outside is clear PO film, inner is white-black film

In order to make the 100% blackout in greenhouse. do you know how to do the cooling fan? 

As you know, when the cooling fan is working, the sun light is go through into the greenhouse, so how to deal with this issue, use the fan black cover like the following:

More information, please feel freely to contact us.