Non-Metallic. RV/Marine Grade Uv Stabilized Glass-Filled Polyester Construction. 4-Way Right Angle Rear Safety Enclosure. Replacement Cap & Bezel Part Number(s): 80425-A-SQWT, 80425-SQWT, 80855-A-SQWT, 80855-SQWT, 80815-SQWT.