Hubbell Electrical Products Square Box - Steel 229

WELDED TYPE 0.0625 INCH PRE-GALVANIZED STEEL MATERIAL 4 INCH 4 INCH 1-1/2 INCH UL 514A, CSA C22.2 APPROVAL MS BRACKET FLUSH, CEILING/WALL MOUNTING 25 STANDARD PACKAGE 21 CU INCH CAPACITY (1) 1/2 INCH CONDUIT BOTTOM, (4) CABLE SIDES, (2) 1/2 INCH CONDUIT SIDES, (1) (1/2 INCH - 3/4 INCH) CONDUIT THREADED KNOCKOUT SIDES KNOCKOUT SIZE 8 KNOCKOUT(S) (1) BOTTOM, (7) SIDES KNOCKOUT LOCATION ARMORED/METAL CLAD/FLEX CABLE CLAMP TYPE HUBBELL., RACO. BRAND APPLICABLE STANDARD ANSI, NEMA OS1 APPLICATION INSTALLED IN WALLS OR CEILINGS FOR LIGHTING FIXTURES, SWITCHES OR RECEPTACLES