SPARKWHIZ Shipping Container Vent, Cross Flow Ventilation 4 Pack

Somewhat expensive, but excellent quality. Does the job that it’s intended to do

Installation was easy and it has measurably improved ventilation in my 40 foot container. I bought two four packs of these and installed four up high on one wall and four down low on the other wall that's in the shade. It keeps cool air circulating up and across to the other side. I went from 60% humidity to 30% humidity in one day. Eight vents was possibly overkill, but there's not much downside to good ventilation. To install, I traced the screen on the inside, measured 1/2" in from top and bottom and cut out a rectangle in the middle. I used a 3" cut off tool and it worked well. Then once the hole is cut, go on the outside of the container, line up the louvered piece with the hole and mark where to drill the bolt holes. Drill the holes with a good sharp bit (carbide works awesome). Then clean surfaces, apply urethane sealant to the back of the louvered piece. Stick it on and bolt it down with the screen on the inside! You will need a helper to hold the screw on the outside while you tighten. If that's not feasible you could probably use rivets.

These worked great, easy to put in, I even put the screws and nuts in by myself, got a little creative.

Works great easy to install on metal transport container

Dies the job, seems to be of good quality

Worked well for my cargo container. I did caulk around the vent before installing to prevent water leaking in. I also installed 8 total vents .Four high and four low.

Wow, pleasantly surprised. Immediately lowered the temperature (summer). Easy to install, I used 4 per side on a 40’ high cube.

Yes, it is working just as we hoped. Cool our storage shed

As described. Worked well and fit on our shipping container. I cut holes with angle grider and then drilled holes and bolted these in. A+ would recommend.

Product meets or exceeds description. Seems high quality, not yet installed, but cannot see how I would be disappointed. No bugs or rodents can defeat this item.