This is a 40-type, straight tube, starter-type fluorescent lamp. These items have been stored at home for a long time. I'm selling these 6 lamps together at a low price because I've switched to LED lights. NEC Lifeline Fluorescent Lamp 5 pieces FL40SSW/37 Product Details Size Category: 40-type Light Source Color: White Correlated Color Temperature (K): 4200 Average Color Rendering Index: Ra61 Total Luminous Flux (Rated) (lm): 2945 Rated Lamp Power (W) Rated: 37 Luminous Efficacy (lm/W): 79.6 Lamp Current (A) Rated: 0.41 Rated Life (Lamp Life) (hours): 12000 Tube Diameter φ (mm): 28 Overall Length (mm): 1198 Weight (g): 200 Base: G13 Panasonic Palook Premier 1 piece FL40SS ENW 37H F2 is the model number for Panasonic's "Palook Premier Fluorescent Lamp." This is a straight tube starter type (glow starter type), with a size of 40-type and a daylight white (natural color). Main features of FL40SS ENW 37H F2: Bright and Eye-Friendly: Panasonic's unique technology is used to reduce the decrease in brightness during lighting, and it also achieves a long lifespan. Premier Coating: The brightness lasts until the end, and it is designed to be gentle on the eyes. Specifications: Total Luminous Flux: 3560 lm Power Consumption: 37 W Color Temperature: 5200K Rated Life: 15000 hours Base: G13 Glass Tube Diameter: 28mm Condition: New, unused. The packaging material and cardboard box have stains and tears. (Please check the photos, although they may be difficult to see) I will ship using a repurposed cardboard box, adjusting the size as needed. Please understand the above and refrain from purchasing if you have any concerns. Also, returns are not accepted after purchase.