Abbrev. With Packaging Info.: M400UBT28 6/CS 1/SKU
ANSI Code: M59
Approx. Lumens (initial - horizontal): 32000
Approx. Lumens (initial - vertical): 36000
Approx. Lumens (mean - horizontal): 20500
Approx. Lumens (mean - vertical): 25500
Arc Length (in): 1.77
Arc Length (mm): 45
Average Rated Life - Horizontal (hr): 15000
Average Rated Life - Vertical (hr): 20000
Base: Mogul
Bulb: BT28
Color Rendering Index (CRI): 65
Color Temperature/CCT (K): 4000
Diameter (in): 3.5
Diameter (mm): 89
Family Brand Name: Compact Metalarc
Fixture Requirement: E
Lamp Finish: Clear
Light Center Length - LCL (in): 5
Light Center Length - LCL (mm): 127
Maximum Base Temperature C (F): 482
Maximum Bulb Temperature C (F): 662
Maximum Overall Length - MOL (in): 8 5/16
Maximum Overall Length - MOL (mm): 211
Nominal Wattage (W): 400
Operating Position: Universal
Ordering Abbreviation: M400/U/BT28
Warm-up Time (min): 2-4