Quote Originally Posted by Barca_Veloce View Post
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You can buy container vents. I sell over the road tractor trailer parts and service. We also sell container parts. Do an online search and you will find them. Also, you can weld hooks etc. versus bolting stuff to the sides. mabs ke sure the top doesn't have leaks. You can buy smoke bombs to test for leaks.

Shipping Container Air-Vents - Bing images