A -- Hemispherical shield in front of filament masking all direct
light B -- Operate at or near horizontal C -- Protect from moisture. Safety screening techniques recommended D -- Replace broken lamp immediately. Inner bulb pressurised and
could shatter unexpectedly E -- Use safety screen external to lamp F -- Operate BDTH G-- Operate BD ±30° H-- 100V rating available to order J -- 120V rating available to order K -- Specially designed for searchlight applications L -- Twin filament lamp. Lumen figures relate to single and twin
filament options M -- Tungsten Halogen minimum bulb wall temp 250°C N -- 3 or 4 amp HBC fuse necessary P -- 5 or 6 amp HBC fuse necessary Q -- 6 or 7 amp HBC fuse necessary R -- 10 amp HBC fuse necessary S -- Due to internal integral reflector nominal lumens not shown T -- Obscured top V -- Due to integral dichroic reflector nominal lumens not shown W -- Axial coiled coil single ended lamps will generally give better
reliability against premature arcing if orientations in which the main support
spine is under the filament are avoided.