Here is the US 🇺🇸 equivalent to my shiplap boards. These 4' x 8' sheets are so customizable as you can rip them down to your desired width. I usually do between 5-6" to mimic traditional shiplap boards. Giving you around 8 boards per sheet. Below I've linked the 2 thicknesses 1/8" & 1/4" in the underlayment/utility plywood as well as a hardboard option which can also work to achieve this faux shiplap look. Happy building!