This is a great idea for a window frame shelf, especially if you have space and privacy concerns. Designed by of Japan, these shelves do double duty. And they do it with style. The checkerboard effect looks great from the inside and from the outside. The shelves are integral to the overall design. Not only do they define the style of the house – but they define the name: Checkerboard House. And they add just tons of space for tucking things away or displaying them proudly. Lots of nooks and crannies – places for small treasures and colored glass to reflect the sunlight. Checkerboard shelving – a unique design that solves two issues: space and privacy. We love it.