703 Features: -Round blank box cover with knockout. -Material: Steel. -Boxes and pans are used in the installation of ceiling or wall lighting fixtures. -Combination screw heads provide for faster installation. -0.5" Knockout seal. -Ceiling pans are used in the installation of ceiling or wall lighting fixtures. -UL - file E195978. -Dimensions: 3.5" H x 3.5" W x 0.06" D.