Mercury Vapor Ultra Violet Bulb, Compatible Brand or Manufacturer Purlogix, Product Type Mercury Vapor Ultra Violet Bulb, For Use With Inline Water Dispensers, Compatible Manufacturer Part Number BluV-MP, BluV-MPW, Compatible Grainger Part Number 39AP24, 39AP25, Overall Height 9 in, Overall Length 8 1/4 in, Product Category Filters and Cartridges, Color Clear, Material Glass, Metal, Plastic