4.85″ square metal board with 45 degree chamfered corners. Overall thickness .12.
6″ square cast aluminum board. 5.56″ square plateau on rear with sunken center to reduce weight. Lip thickness .20. Overall thickness .40. Radiused corners and one edge is tapered/beveled.
Used on a C1 8×10. Swappable with the Deardorff.
This is a stocked item and is good candidate for a lensboard adapter.