Material：Steel
Finish: Pre-galvanized
Standard: UL 514A
Type: with raised grounding screw
Size: 4”×2”
Depth：1-7/8” or 2-1/8”
KnockOuts. Size: 1/2” or 3/4” or 1/2”&3/4”
Thickness：1mm - 1.6mm