Item Condition:** Brand New in Original Box Up for sale is a genuine **SYLVANIA Metalarc Pulse Start Metal Halide HID Bulb (400W)**. This is a premium industrial-grade lamp commonly used for commercial high-bay warehouse fixtures, area floodlights, and parking lot lighting. **Specifications:** - **Brand:** Sylvania - **Part Number:** 64052 / MS400/PS/BU-ONLY - **Wattage:** 400 Watts - **ANSI Ballast Compatibility:** M155 / M155/E - **Operating Position:** Base Up Only (BU-ONLY) - **Base Type:** E39 Mogul (Large commercial screw base) - **Bulb Shape:** ED37 *Buyer Note: Please verify your specific fixture ballast requirements (ANSI M155) prior to purchasing to ensure compatibility. This bulb requires a matching ballast to operate.* **Shipping & Handling:** Will be meticulously wrapped in heavy bubble wrap and double-boxed to guarantee safe arrival. Ships out within 1 business day.