I'm not 100% sure, but in doing a quick internet search EGR Slimline in channel visors seems to ring a bell with me.
The vendor was either Autoanything.com or Realtruck.com.
Whichever it was, they were fabulous about the return. I explained the situation and poor or non existent fit to them. They explained that the item was non returnable but they would give me a one time full refund deal where I could pick any other brand they have for the same price. Plus, they let me keep the old visors. I promptly gave them to another guy with an F250. Never did hear if he had better luck than I did with them.
I wish that I could remember which vendor. I don't mind passing on the name when I have good customer service like I received in this case.
I wound up putting Wade tape on visors on. Like Just Strokin says, they stay on and I don't ever worry about them.
Sorry I don't have more specifics for you on where I bought them. Once a product like this is successfully installed I don't usually keep packaging or receipts.

 

Thanks Poncho.. I've turned the corner on saving boxes and receipts too... One day I realized I was out of storage space and much of the problem was caused by all the empty boxes I had collected and never used.. I toss them all now...
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Just looking for the best deal now...

 

I've had install Putco in channel visors, $50 for set of four on Amazon, one year ago. High quality, very snug, no problem with window operation - very happy. They are black from outside, little bluish from inside, looking out, but its hardly noticeable. Some visors are flimsy and thin, not thees.

 

I always get AVS brand. And always in channel style. They have been on my explorer for 9 years. Escape for 4 years. And F350 for 1 year. Only one has gotten loose and AVS will send you rolls of tape if you call and tell them.

But i always get alcohol and rags to clean the window channels spotless. Those little wipes arent enough for me. I use them as a final wipe right before i set them

 

I ordered a set of AVS in channel today for my 15. I read that some folks have issues with the smart window but that they can be reprogrammed. I will keep you updated on how they fit/work.

 

I bought the weathertech snap in visors for my 15. I couldn't get them to work with the smart windows at all. Ended up giving them to a buddy and getting the vent visor with the tape mount.

 

I would never put that tape on my paint or exterior weatherstrip. It is hell to get off. Had to take them off on my newest used truck. It was missing one and another was cracked. Still see where they were on the truck

 

AVS is the only brand I'll use. had them on 3 different models, and they work great. Only issues I ever had were my fault.