This is 1x6 TnG, clear or better. It's going to be pricey. We used a product called Sansin SDF, in a custom color. It's been good on the siding, not so good on the deck. Sikkens SRD is going to be the closest from that manuf. There are a lot of products out there, all with their advantages and disadvantages. I'd recommend talking to whoever is supplying the finish or putting it on, and getting their opinion. Keep in mind the more transparent the finish, the more maintenance it will need. This project will need the south facing wall redone every 2 years, and other walls every 4 or 5 years.