Check the listing for details. ATS4-450 Superior UV Bulb for Aqua Treatment Services ATS-4-450, 10000 Hours. Condition: New. Listed at 22.70 USD. Compatible ats4-450 superior UV bulb for aqua treatment services 10000 hours 10, 000 hour long life lamp 24 watts UV hot cathode germicidal UV bulbs (uv-c), are low-pressure mercury arc lamps that are the most effective tool for eliminating microorganisms such as virus, bacteria, mold and yeast in the air and impurities in water. Produces uv-c (253.7 nm wavelength) radiation (harmful to eyes and skin). Specifications: Part number: Ats4450, dws8v, ev8e, se8v, sl8v wattage: 24w amperage: 0.425 average life: 10, 000 hours base type: 4 pin pattern: Square box bulb shape: T-5 (t5) t5f length: 17.17 in. (436mm) family: Germicidal uvc lamps diameter: 0.5 in (15.Mm) ultraviolet put-put: 6.4 watts ends: Single end bulb finish: Clear burning position: Universal burn output: Uv-c spectral peak: 253.7nm compatible bulb guaranteed to meet or exceed manufacturers specifications and performance. Buy wholesale from the importer.