Hubbell-Raco 693 Masonry Box, 4-Gang, 2-1/2" Deep, 1/2 " & 3/4" KOs, Metallic

4-Gang Masonry Box, Nongangable, 2-1/2 in. Deep, Sixteen Concentric KO’s •Rugged welded design does not fall apart during construction. •Available from one to six gang configurations in both 2-1/2" and 3-1/2" depths. •Rectangular shape fits square cuts in block. •Large volume design allows for additional work room inside the box. •Standard 1/2" and 3/4" concentric knockouts. •Device ears inside the box prevent mortar from getting in the device holes. •Steel voltage partition #971 fits all 2-1/2" or 3-1/2" depths. •Standard wall plates can be used.