Comparison : Item # 52C20, 4" Drawn Cover for 4" Square Box - Two Device
Item # 52C17, 4" Drawn Cover for 4" Square Box - Two Device
Item # 52C18-5/8, 4" Drawn Cover for 4" Square Box - Two Device
Item # 52C18, 4" Drawn Cover for 4" Square Box - Two Device
Item # 52C19, 4" Drawn Cover for 4" Square Box - Two Device