Masonry Outlet Box Partitions: Type - Masonry Outlet Box; Material - Steel; Number of Gangs - 3; Depth in inch - 2.50; Height in inch - 3.75; Width in inch - 5.87; Capacity - cu-in - 42.0; Knockouts/Ea.Side-Ea.End-Bottom - (2)1/2-3/4E - (3)1/2-3/4E - (6)1/2-3/4E