Leviton 3059F-1E Portable Outlet Box, Single-Gang, Standard Depth, Feed-Thru Style, Cable Diameter 0.230-Inch 0.546-Inch, Black Non-Metallic Construction Provides Protection Against Electrical Shock Available in Pendant and Feed-Thru Styles Molded Santoprene TPV Housing is Extremely Durable, Even in Harsh Conditions Heavy-Duty Stainless Steel Spring-Loaded Flip Lids Provide NEMA Type 3R Protection (When not in use) Variable Adjust Strain Relief Provides Superior Protection Throughout Entire Range of Cable Diameters