ELCO Lighting EL1499REA 50W 4" Low Voltage Remodel Housing for MR16 Bi-Pin Electronic TransformerElco Lighting EL1499REA EL1499REA Product Description 4" new construction housing with a magnetic or electronic transformer. Uses a GU5. 3 Bi Pin socket for use with Bi Pin LED MR16 lamps. FEATURES : Single wall airtight remodel construction. Trims sold separately. Lamp: 50W MAX 12V MR16 GU GX5. 3 bi pin LED Halogen (not included). Lamp Holder: MR16 GU GX5. 3 bi pin socket. Note: Use only dimmers specifically designed for use with electronic