Brand: LSE Lighting - Cross Reference Model # for compatibility purposes: 70-18405 * Wattage: 95W (HO - High Output Lamp) - Bulb Type: Ultraviolet Germicidal UV Lamp * Base Type: T5 4pin Base (4pins on ONE END) - Length: approx 33" * Cross Reference Model # for compatibility purposes: 70-18420 * This replacement lamp by (LSE Lighting) brand is 100% compatible to use with Delta Ultraviolet Sterilizer Models EA-3H/4H-20/E20/EA-26.