Brand: LSE Lighting® - Professional Ultraviolet Company Base: 4pin (with collar for mounting); Utraviolet Power: 254nm Length Approx: 14' (357mm) This UV Lamp by (LSE Lighting Brand) is 100% compatible for use with DustFree 09734 G24 UV Light System. All lamps listed are LSE Lighting brand UV products. We do not sell Bio-Fighter brand lamps. All Bio-Fighter brand names, trademarks and logos are property of Bio-Fighter respectfully. Warning: Ultraviolet Germicidal UVC light is harmful and dangerous to your eyes and skin. Please Use safety gear during installation.