Masonry Outlet Box Partitions: Type - Masonry Outlet Box; Material - Steel; Number of Gangs - 2; Depth in inch - 2.50; Height in inch - 3.75; Width in inch - 3.59; Capacity - cu-in - 28.0; Knockouts/Ea.Side-Ea.End-Bottom - (2)1/2-3/4E - (2)1/2-3/4E - (4)1/2-3/4E