Special purpose Infrared R125 reflector ruby finish light bulb for a wide variety of commercial and industrial heating applications, including animal husbandry.Heat source light bulbs must be installed at least 0.5 metres away from other objects.Soft glass.Features a commonly used ES-E27 Edison screw (27mm) cap/base.Instant full light.R125 (125mm) Glass envelope.Universal burning operation.Internally fused for safety.Not suitable for household illumination.Suitable for dimming.Protect light bulb from contact with liquids/humidity to prevent breakage due to thermal shock.