A lighter version of the original G12-8 or formally referred to as "Standard" block.  The G10-8 refers to its 10" deep and 8" tall size category.  By shortening its depth and slightly decreasing its wall thickness, the weight of this block has been significantly reduced by as much as 30 lbs per unit.  More on the pallet, more on the truck, and more can be installed per day.  The all around savings on this unit makes it one of the most cost effective wall systems on the market.

As a finished wall, esthetically speaking, there will be no real distinction between the G10 and G12 products.  In other words, the finished result will look the same.