Products / Discontinued Products / T8 Tube
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Features
Indoor use only.
Direct replacement for traditional T8 fluorescent tubes
  Rotatable (0°/45°/90°)
Perfect for a wide range of applications.
High power efficiency > 80%.
High luminous efficacy LEDs .
Easy to Instant on, no flicker or buzz.
Simple rewiring installation allows lamps to run
  directly off.
No mercury allowing for non-hazardous waste disposal.
Emits virtually no UV rays or IR.
Glass-free for safer working conditions.
Energy saving and environment friendly .
 
Specifications
T840 (4-FT)
Type GL-T840-WW GL-T840-NW GL-T840-CW
Energy Used 20 W
Rated Life 30,000 Hours
Input Voltage 100-240V AC
Power Factor (PF) 0.9
Color (CCT) 3000K 4000K 6000K
Luminous Flux (lm) 1280 lm 1450 lm 1600 lm
System Efficacy 64 lm/W 72 lm/W 80 lm/W
CRI (Minimum) 80 80 75
Base G13
Dimension Ø 30 x 1198 mm
Beam Angle 120°
 
T820 (2-FT)
Type GL-T820-WW GL-T820-NW GL-T820-CW
Energy Used 10 W
Rated Life 30,000 Hours
Input Voltage 100-240V AC
Power Factor (PF) 0.9
Color (CCT) 3000K 4000K 6000K
Luminous Flux (lm) 640 lm 720 lm 800 lm
System Efficacy 64 lm/W 72 lm/W 80 lm/W
CRI (Minimum) 80 80 75
Base G13
Dimension Type1: Ø 30 x 580mm
Type2: Ø 30 x 589mm
Beam Angle 120°
* All specifications apply to the fixture assembly as a whole.
Due to the slight variations in the testing environment such as differences in ambient temperature or test equipment calibration, specifications are statistical reference values and may not match the actual technical parameters of an individual product.
 
Luminous Intensity Distribution Diagram
GL-T820-WW / CCT : 3000K
 
 
GL-T820-NW / CCT : 4000K
 
 
GL-T820-CW / CCT : 6000K
 
 
GL-T840-WW / CCT : 3000K
 
 
GL-T840-NW / CCT : 4000K
 
 
GL-T840-CW / CCT : 6000K
 
 
 
GL-T820CW vs. CFL illuminance comparison table
Item Picture Manufacturer Model Name Luminous
Flux (lm)
Efficacy
(lm/W)
CCT CRI Beam Angle Illuminance(lux) VAC-IN(V) IIN(A) P(W)
1m 2m
1 GlacialLight GL-T820CW x 4 2636.0 65.9 6640 81.3 101 928.0 232.0 120 0.34 40
2 Fixture : NA
T8 tube : X ¨È
FL20D/18
(T8 tube x 4)
2388.0 33.2 6440 67.2 101.5 970.0 239.4 108.8 0.70 72
 
 
Download
IES file  T820-WW(3000K) T820-NW(4000K) T820-CW(6000K)
IES file  T840-WW(3000K) T840-NW(4000K) T840-CW(6000K)
Detail Spec download
 
 
GL-T8 series  
 
 
T8 Tube-V2
T8 Tube Hight Power
T8 Tube Low Power