This Simon Says Stamp dies are usable in nearly every machine on the market. Use wafer dies on cardstock, felt, fabric, even shrink plastic! You can use wafer thin dies to cut, stencil, emboss and create! This die was designed to make it super simple for you to create 3 evenly spaced squares on your cardstock. Overall die dimension is approximately 4.25 x 1.25 inches. Each window is approximately 1.25 x 1.25 inches.