Our kids bought my wife an hourglass a few years ago, but it got knocked off the shelf a month ago and broke the glass. I contacted justhourglasses with the dimensions and description of the hourglass and Shannon replied back that she had found a glass sand timer that looked like it might work as a replacement in my wood frame. After a couple more emails back and forth to verify some details, I ordered the glass sand timer. It arrived a few days later in great condition and it fit perfectly into the wood frame and is back up on the shelf. Great product and fabulous customer service! Thank you so much!