Product Overview
GE 20872 EXT/CG 50W MR16 Spot | 12V 15° 8400 CBCP | ConstantColor
GE ConstantColor® Precise™ EXT/CG 50W MR16 Narrow Spot Lamp
Order Code 20872 — 15° Narrow Spot — 8,400 CBCP — UV Filtered Cover Glass — 6,000 Hour Life
Key Specifications
Product Overview
The GE ConstantColor® Precise™ EXT/CG 50-Watt MR16 Narrow Spot Lamp (Order Code: 20872) delivers exceptional beam intensity and color consistency for professional lighting applications. Featuring a precise 15° narrow spot beam producing 8,400 CBCP (Center Beam Candle Power), this lamp provides concentrated, powerful illumination exactly where needed.
With 3050K warm white light, 100 CRI, and GE's proprietary ConstantColor® reflector coating, this covered-glass lamp maintains consistent, crisp white light throughout its extended 6,000-hour rated life—far exceeding standard MR16 lamps.
Technical Specifications
Electrical
- Wattage
- 50 Watts
- Voltage
- 12 Volts (Low Voltage)
- Base Type
- GX5.3 / GU5.3 Bi-Pin
- Filament
- C-6 (Added)
- ANSI Code
- EXT/CG
Light Output
- Beam Angle
- 15° Narrow Spot (NSP)
- Center Beam Candle Power (CBCP)
- 8,400 cd
- Color Temperature
- 3050K Warm White
- Color Rendering Index
- 100 CRI
- Luminous Flux
- ~560 lm (estimated)
Physical
- Maximum Overall Length (MOL)
- 47.6 mm (1.875 inches)
- Bulb Diameter
- 50.8 mm (2.0 inches)
- Face Design
- Clear Cover Glass with UV Filter
- Burn Position
- Universal
Product Information
- GE Order Code
- 20872
- Description
- Q50MR16C/CG15
- UPC
- 043168994217 (Verify)
- Rated Life
- 6,000 Hours
- Case Quantity
- 20 units
ConstantColor® Technology Benefits
GE's ConstantColor® reflector coating delivers consistent clear white light throughout the lamp's rated life. Unlike ordinary MR16 reflectors that produce murky, greenish light as they age—discoloring illuminated objects—ConstantColor® maintains:
- Stable 3050K color temperature from first hour to last
- High lumen maintenance — over 90% light output throughout 6,000-hour life
- No greenish tint that affects merchandise and artwork appearance
- Consistent beam quality with smooth, even light distribution
Performance & Benefits
- Exceptional Beam Intensity: 8,400 CBCP provides powerful, concentrated light for long-throw applications
- Superior Color Consistency: ConstantColor® coating prevents the greenish tint common in aging standard MR16 lamps
- UV Protection: Cover glass with UV filter protects sensitive materials and artwork
- Long Life: 6,000-hour rated life exceeds standard MR16 lamps (typically 2,000-4,000 hours)
- Universal Operation: Works in any burn position for flexible installation
- Precise Optical Control: 15° narrow spot beam with minimal spill light
- High Color Accuracy: 100 CRI ensures vivid, true-to-life color rendering
- Dimmable: Compatible with standard low-voltage dimmers
Recommended Applications
- Retail display spotlighting (jewelry, luxury goods, high-end merchandise)
- Museum and gallery accent lighting
- Architectural feature highlighting
- Track lighting systems requiring intense, focused beams
- Display cases with UV-sensitive materials
- Long-throw accent lighting in commercial spaces
GE 20872 EXT/CG vs. Standard 50W MR16
| Feature | GE 20872 EXT/CG | Standard 50W MR16 |
|---|---|---|
| Rated Life | 6,000 hrs | 2,000-4,000 hrs |
| Color Stability | ConstantColor® | Degrades over time |
| CBCP | 8,400 | Varies |
| UV Protection | Yes (Cover Glass) | No |
Safety Information
- Keep combustible materials away from lamp — MR16 lamps operate at high temperatures
- Use only in fixtures rated for this product — Requires 12V transformer compatible with 50W load
- Do not use if outer glass is scratched or broken — Risk of implosion and UV exposure
- Allow lamp to cool before handling — Bulb wall reaches high temperatures during operation
- Turn power off before installing or removing lamp — Electrical shock hazard
- Dispose of lamp in a closed container — Pressurized lamp may rupture if mishandled
