I guarantee it wont be light or smell proof. however, this is easily fixed - get some weather stripping, maybe a little duct tape here and there. Put the light on and turn the lights off in the room - weather strip any areas that you see light coming out of - if it can come out, it can go in, and you will create hermies if there is light leaking in during flowering. Any other questions, just ask! Im no expert but I just made my own cabinet and I went through a lot to light proof it, so I can only tell you what worked for me!
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