Osram 54622 HPL 575/115 (UCF) - HPL Series Halogen - 575W - 115V - 16520 Lumens Watts_51 It has a part number

It has a part number of 15-0074

It has a part number of 05-0250

GPH1554T5/HO

It has a part number of 05-4284

these lamps have improved heat resistance for high thermal requirements and a tighter range of color temperature for consistent color and brightness

Osram 54622 HPL 575/115 (UCF) - HPL Series Halogen - 575W - 115V - 16520 Lumens Watts_51 It has a part number575 watt, tungsten halogen, HPL series Features & Benefits Ultra compact filament design (UCF) for high lumen output Unique top bridgeless construction improves beam uniformity for lamps with 120 volts Unique gas fill which improves light output and minimizes risk of arc out Special heat sink base for maximum durability in high temperature applications Reinforced pinch seal for extra mechanical strength Foam packaging for easier handling and