You could check out the Susan Jablon website. She sell 1x3 glass subways. In the tile gallery there are a number of 1x3 tile backsplashes. Hope this helps, Petra Here is a link that might be useful: Susan Jablon Mosaics Gallery

I used 12 x 12 tiles on the diagonal on my backsplash. Sorry my pix are not up right now. If you email me through gardenweb I can send you a picture. The 12 x 12 on the diagonal takes up 17 inches. The other inch is taken up by plugmold I have installed at the top of the backsplash.

I'm not sure how I came across this post, I think it was displayed on the right side and I clicked on it being intrigued by the tile making. I was at one time interested in working with papercrete and hypertufa. But after enlisting my brother, who wasn't as enthusiastic, and my niece, who poured cement down my laundry room sink, which original to the house had lasted 70 years, and ruining three blenders, my interest waned. True to form, if I come upon difficulty in a project, I think of it as a sign for me not to continue. And really, after all these years of trying various crafts that result in crap, I should know better. I also should have known better than to ask my brother, who always says it can't be done to any of my unique design ideas. And I should have known better than to ask my niece, who once stayed up all night before having to drive to LA for an art show, cutting mat after mat after measuring once, twice, sometimes ten times, but always coming out with the wrong size. I think we both have math dyslexia. I should video us trying anything crafty to see where we go wrong. I think both of us having ADHD might have something to do with it. Sorry for the backstory and run on sentences. So, I just wanted to see if you continued with your venture. And to say sorry for whatever tragedy occurred to cause you to have to move to Florida. Not that there is anything wrong with Florida, but it isn't Panama. Which is one of my favorite places in the western hemisphere. I hope no one is upset that I brought up a seven year old post.

While not labelled as such, im thinking the Subway Ceramic images are prob that narrow. Here is a link that might be useful: subway grout