The MSD Platinum 20 RB is a 470 watt replacement bulb.

323741 Specifications:

• Technology: High-intensity discharge
• Type: Metal Halide
• Watts: 470W
• Ends: Single-ended
• Overall Length: 72mm
• Diameter: 58.5mm
• Burning Position: Universal
• Arc Length: 1.2mm
• Initial Lumens: 22,400-23,000
• CC Temp: 8000 K 
• CRI: 80
• Life: 1500 hours
• Reflector: E21.9
• Working Distance: 31.4mm
• Pinch Temp: 400°C

This bulb works in many applications including the following: 

Acme XP-20R BEAM, Acme XP-470 BSW, Acme XP-20R BSW, Clay Paky Mythos, Clay Paky Super Sharpy, Elation Platinum FLX, Terbly G12WB, Terbly G12 Hybrid MKII, Jolly X-5 Couple, FINEART FINE 470BEAM, FINEART FINE 470BSW