Special purpose Infrared R125 reflector diffused finish light bulb for a wide variety of commercial and industrial heating applications.Constructed from boro-silicate hardened glass to help with resistance of thermal shock. Heat source light bulbs must be installed at least 0.5 metres away from other objects.Hard 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.This R125 Reflector is a newer product from Crompton Lamps and supercedes their old R125 Reflector part codes: IR250DES, IR250HGCES.