Incandescent Lamp Information

Incandescent Lamp Bases
Codes Used in Incandescent Lamp Descriptions
Comparison Between Incandescent & CFL Lamp Wattages
Codes Used to Identify Incandescent Lamp Types


GLS General Service Lighting
A General ("Arbitrary")
G Globe
D Decorative (Flame, Teardrop, Etc.)
R Reflector
FL Flood Light Type
SP Spot Light Type
PAR Parabolic Aluminized Reflector (PAR16 = 2" Diameter / PAR20 = 2.5" Diameter / PAR30 = 3.75" Diameter / PAR38 = 4.75" Diameter)
MR Multifaceted Reflector



Incandescent CFL Approximate Lumen Range
25W 5W  
30W 7W  
40W 9W 450lm
45W 11W  
60W 13W 890lm
70W 15W  
75W 19-24W 1210lm
100W 25-30W 1750lm
150W 38W 2780lm



Sylvania Osram Philips GE
GLS Classic A Shape Standard A-Shape A-Shape
GLS-T Classic T60 Shape Standard T-Shape -
Candle B Shape Candle B-Shape B-Shape
Candle Twisted BW Twisted Candle BW Shape F-Shape
Candle Windshape BA Shape Candle BXS Shape CA-Shape
Ball P Shape Ball P Shape G-Shape
Globe G Shape Globe G Shape G-Shape
Reflector R Shape SPOTONE R Shape R-Shape
PAR 38 Par 38 SPOTONE PAR 38 PAR 38
Tubular T Shape / Tubular Tubular T-Shape
Pygmy T Shape / Pygmy Pygmy S-Shape
Striplights - Linear T26 / T37 -
Linear Linestra Linear T30 -





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