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Sylvania Brand 64391 Lamp
 Sylvania 64391 MP320/350/PS/BU-ONLY/BT28
Discount Pricing
(prices per item)
1 - 5 $49.94
6 - 11 $49.44
12 - 17 $48.94
18 OR MORE $48.44


  The Sylvania 64391 Lamp is an Energy Star Certified Product The Sylvania 64391 Lamp is a RoHS Compliant Product  
General Specifications
Base Type
EX39 (Exclusionary Mogul)
Bulb Type
Rated Average Life
20000 hrs
Color Temperature
3800 K
Color Rendering Index (CRI)
Operating Position
Bulb Finish
Maximum Overall Length (MOL)
8.310 in  (211.1 mm)
Bulb Diameter
3.504 in  (89.0 mm)
Light Center Length (LCL)
5.000 in  (127.0 mm)
Product Specifications  
Manufacturer Product Code
Ordering Code(s)
Standard Case Size
(listed prices are per lamp)
RoHS Certified
Energy Star Rated
  Sylvania 64391 Product Specifications

Sylvania 64391 Usage Notes Usage Notes
Hot Restrike time: 5-7 minutes.
Warm-up time: 2-4 minutes.
Use with 4000V pulse rated sockets only.
Lamps classified as O-type, like this one, comply with ANSI standard C78.389 for containment testing and may be used in open luminaries. See manufacturer lamp warning.
When operated on ballasts having a sustaining voltage less than 270V, lamp life may be significantly reduced.
Lamps may be operated on ANSI M132 (320W) Compliant ballasts. ANSI M154/O:M132/O:M131, M131/O.

Sylvania 64391 Manufacturer Documents Manufacturer Documents
Product Safety Datasheet

Sylvania 64391 Product Notes Product Notes
MP320/350/PS/BU-ONLY/BT28. Dual wattage 320/350W Metalarc Pulse Start high output, position oriented, reduced color shift, open fixture rated pulse start metal halide lamp, clear, base up burn within 15deg.
SYLVANIA METALARC PULSE START lamps provide less color shift, high lumen maintenance and a long life. Their premium performance provides opportunities for higher maintained illumination levels and substantial energy savings. Additional increases in optical efficiency may be gained by fixture designs using compact outer jacket configurations.
SYLVANIA METALARC PULSE START lamps combine new metal halide lamp technology with proven ignitor technology. The result is a more transparent arc tube over life yielding less color shift and high lumen maintenance.

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