What a rather unique design.

It should work, in theory. If the inside is a non-glossy black base with that design, the inserts overlapping, it should prevent light from passing.
Kush Over Reviewed by Kush Over on . Light Proofing Hey guys I was just wondering what way you keep the light from getting out of the intake and exhaust fan holes in your boxes. Do you think something like this might work? The drawing is just a black corrugated tube with black inserts in it. Rating: 5