TL-X XL 40W/33-640 1SL is a single pin fluorescent lamp with a diameter of 38 mm. The product life is 26000 hours, the color temperature is 4100K, and the color code is 33-640. The rated light source power is 40W, the lamp power is 39.0W, and the lamp voltage is 103V. The packaging configuration of this product is 25, and the barcode on the outer box is 8711500261380.