SK15 jacketed infrared heat lamp with ruby coating reduces glare to the eyes and provides instant heat when turned on. Extra protection is provided using a quartz jacket around the lamp. It uses short wave infrared technology which converts most of the electrical energy in to heat, with a lifespan of up to 5000h this is one of the most efficient on the market. This makes a perfect patio heater replacement lamp or it can be used for industrial applications including paint drying.