IN size: ISO SHAPE BRICKS ARE BIG IN SIZE COMPARATIVELY VDZ SHAPES. OUTER CHORD THICKNESS OF ISO SHAPE BRICKS ARE 103MM AND INNER THICKNESS IS VARIABLE. BUT IN VDZ SHAPE BOTH THICKNESS ARE VARIABLE AND MID THICKNESS ALWAYS WILL BE 71MM.

IN LINING: BRICK JOINTS WILL BE HIGHER SIDE IN VDZ SHAPE WHEN COMPARING WITH ISO SHAPE BRICKS.

VDZ SHAPE HAVING HIGH MECHANICAL FLEXIBILITY THAN ISO SHAPE

GENERALLY BASIC BRICKS ARE MADE BY VDZ SHAPE AND ALUMINA BRICKS ARE MADE AS ISO SHAPE.