Intermatic WP1030MC 1/2 Gang 3 1/8-Inch Die-Cast Outdoor Box Single-gang Vertical with (WP217) Flexi-Guard Inserts, 3-1/8-Inch Depth, Gray For Commercial Applications Heavy-duty die cast receptacle covers Complies with 2008 NEC Article 406.8(B) Patented Flexi-Guard inserts provide flexibility in field by selecting and installing proper insert