Gallery Switches From Inches To Centimeters

I have seen a discussion on this subject (kind of), but I'm having a different problem: On my smugmug website I have a link named "Purchase Artwork" which is linked to my "artistswebsite.com" (http://mick-burkey.artistwebsites.com/galleries.html) for selling my stuff. When I click on that link and click on an image and then clink on "framed print", for instance, the result opens showing the overall sizes in inches. But if I choose a different size, the overall sizes change to centimeters. I don't want that and can not see how to get it to stay in inches. My location shows correctly and also shows USD and unit measurement as inches. And yet it changes. If I go to my FAA website through FAA, it does not change.

I'm hoping someone at FAA can check this out for me.

Thanks,
Mick Burkey
website: www.burkeyphoto.com