Sealed Beam
Sealed beams are lights in which the components of the lighting group cannot be replaced in individual parts, but only as a complete unit. The light group of these sealed beams is specially sealed so that a good seal against environmental influences is achieved and these classic lights are mainly used for harsh conditions. There is now a whole range of LED light groups that can be used in classic sealed beam housings.
The classification of sealed beams into sizes usually corresponds to those of PAR lights.