12″ Blocks 12x8x16 Single Score 12x8x16 Pilaster 12x8x16 Double Duty 12x8x16 Reg. 12x8x16 FHA Termite 12x8x16 Open Core 12x8x16 Reg. 12x8x16 4 Hour 12x8x16 SBN 12x8x16 DBN 12x8x16 Open End 12x8x16 Bond Beam 12x8x16 Return Corner 12x8x16 Split Face D.D. 1 Face 12x8x16 Split Face 1 Face 12x8x16 Split Face, Single Score 1 Face Home Builders Association Dayton Home Builders Association Cincinnati Western Ohio HBA Miami Valley Cincinnati Dayton Cincinnati National Assoc. of the Remodeling Industry National Concrete Masonry Association. Brick Industry Association Miami County U.S. Green Building Council