nice setup!
I just built a 4x5 foot cab out of 3/4" pvc and black/white poly and duct tape and a couple tarp zippers. It's air-tight and I had to make poly "blinds" to light-proof the zippers. I'm gonna air-cool my hood with the blower pulling air from outside the cab and through the hood, then blown outside the cab and through a DIY muffler. Now here is my question, I am exhausting the cab with a 6" blower pulling air through the cab through a passive intake, but HOW do i light-proof a passive intake??? I am new to ventilation and need to know so i can get this thing ready for action. The only light-proofing that needs to be done is this passive intake thing, which i have yet to cut. Any ideas??
considering that the walls are poly, id probably cut a 6" diameter hole in the bottom somewhere and run some 6" ducting thru it... and tape it up to make it light tight. on the outside, bend the ducting every which way to prevent leakage... like a candy cane shape.