The BIRNS Doubly-Safe Chamber Light, Model 4121, is the world's best lighting fixture for PVHO applications. It meets or exceeds applicable DNV, Lloyd's, and UL requirements; superior thermal design permits the use of higher-output lamps; and BIRNS' exclusive 'doubly safe' dual helium release method makes the entire front of the light its own helium release valve. Model 4121 comes complete with your choice of lamp and lens, and features: Superior thermal design: lamps up to 50w Complete Safety: Dual He release; case ground/Earth Versatility: four lens options; various lamps Model 4121 uses cable assembly CEF3S16-x (where '-x' is the desired length in feet). Select a Data Sheet or Drawing ================================= BIRNS Model 4121 Chamber Light Assembly Drawing 4121-01-10 Lens Choices =============== 35A-007 : Clear 35A-009 : Frosted 35A-011 : Blue 35A-012 : Blue-Frosted 35A-014 : Red 35A-015 : Red-Frosted Lamp Choices =============== 32C-001 : 12v / 20w 32C-002 : 12v / 50w 32C-024 : 24v / 20w 32C-027 : 24v / 50w 32C-015 : 30v / 50w