540mm by 220mm by 4.5mm times two Book Matched
Select from the photo's below
X27 AAA grade
Quarter sawn Alaskan Sitka Spruce
incredibly close grain less than 1mm per year across much of the width.
Three years aged (min and counting)
Quarter Sawn Alaskan Spruce.
Quarter Sawn, Tight grain no visible flaws,
Quartersawn Alaskan Spruce
AAA grade. Aged 3 years