BRAND NEW AND UPGRADED Heating Element or Heater Bulb for various models of infrared heaters. These are compatible with the following models: 1000 1000 XL GEN 3 1000 and more!!! This 20,000 Hour GEN 3 Upgraded OEM Bulb is compatible with older models and will last at least 4 times longer than the older versions. You may need 6 (six) heating elements for your heater. There are five at about 6" long and one at about 8" long (you would probably find out exactly what I mean when you open up your heater to check - almost all infrared heaters in the market have five 6" and one 8" heating elements in them). They all include the ceramic ends. FREQUENT ASKED QUESTIONS: Q: WHY DO YOU NEED TO PURCHASE THESE BULBS? A: ITS LIKE HAVING SPARE LIGHTBULBS AT HOME. YOU CAN ALWAYS EXCHANGE ONE WHEN ITS BURNED OUT. IF YOU DONT REPLACE THE BULB(S), YOUR HEATER WILL NOT BE ABLE TO REACH THE DESIRE TEMPERATURE. Q: HOW MANY OF THESE BULBS DO I NEED? A: EACH OF THESE TYPES OF HEATERS HAVE 6 BULBS INSIDE IN GENERAL. USUALLY ITS ONE LONG (8" FROM HEAD-TO-HEAD) AND FIVE SHORT (6" FROM HEAD-TO-HEAD) BULBS. THE BULBS LISTED HERE ARE FOR 6" AS EACH HEATER HAS FIVE OF THEM AND YOU WILL NEED THEM MORE THAN THE 8" BULB. SOME PEOPLE HAVE TWO OR MORE OF THESE HEATERS AND ITS A MUST TO HAVE THOSE BULBS HANDY Q: IS IT EASY TO EXCHANGE THEM? A: IF YOU KNOW HOW TO USE A SCREWDRIVER, THEN YOU SHOULD HAVE NO PROBLEM TO EXCHANGE THOSE BULBS AT ALL. I AM ALWAYS HERE TO ANSWER ALL YOUR QUESTIONS WHENEVER YOU HAVE ONE. I HAVE BEEN REPAIRING 10+ OF THESE TYPES OF HEATERS DAILY AND I DO HAVE OTHER PARTS AVAILABLE UPON REQUEST. ALL OF THEM ARE OEM AND NEW. JUST REMEMBER THAT PARTS DO GET BURNED AT SOME POINT ESPECIALLY THAT THEY ARE INSIDE OF A HEATER WITH A HIGH TEMPERATURE.