National TWIN fluorescent light, 13W energy-saving design, requires caution when in use. - Brand: National - Model: TWIN - Type: Fluorescent light - Size: 13W - Notes: Requires caution when using Although new and unopened, it has been over 5 years since purchase, and the box has yellowing and stains. Please understand that the operation has not been confirmed before purchasing. I no longer have any fluorescent lights that use this at home. I have kept it carefully. Thank you for looking.