The N50 Exn is a Zone 2/21/22 hazardous area vapour proof luminaire designed for use in highly corrosive environments. This specialized, explosion proof, fluorescent luminaire is constructed from 304 stainless steel or marine grade 316 stainless steel with a 4mm clear tempered glass lens is a tried and tested fitting that has been widely used over decades as a light of choice within the oil and gas, petrochemical, marine and other hazardous area applications. The gear tray in this luminaire is retrofittable providing long term cost savings and swift and simple maintenance.