LSE Lighting compatible UV Bulb 70-18420 for Elektra Pro EP-20 Brand: LSE Lighting Bulb Type: Ultraviolet Germicidal UV UVC Base Type: T5 4pin Base (4pins on ONE END) - Length: approx 33" This replacement lamp by (LSE Lighting) brand is 100% compatible to use with Elektra Pro EP-20 sterilizer. All lamps listed are compatible brand (LSE Lighting) UV products. We do not sell Delta Ultraviolet brand lamps. All Delta Ultraviolet brand names, trademarks and logos are property of Delta Ultraviolet.