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4 Wavian 20L cans in the back of my truck, for 4 years, in heavy duty overlanding mounts, under a topper. I rotate with ethanol free gas annually. Never a bit of fumes in the back, even when the topper has been closed up for weeks in the summer. I store all the adapters and spouts in a 7.62 can. I treat with PRI-G when rotating. This is the mount and half the cans, this is NOT where they are mounted.. someday I will remember to take a picture of them mounted/bolted down. I installed 1/4 x 20 rivnuts in the bed floor, 5 per mount. Up against the front of the bed, sideways. Quick and easy to remove if needed.


https://i.postimg.cc/MZPpTgpT/20180503_152935.jpg

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Where did you get the mount? I'd like to get a couple but I'd need to make them easily removable.