Product Overview
GE 29703 CMH20T/U/830/G12 — 20W Ceramic Metal Halide (CMH) Lamp — G12 Base — 1,600 lm Initial — 3000K
The GE 29703 CMH20T/U/830/G12 is a 20W ceramic metal halide (CMH) HID lamp on a G12 base, delivering 1,600 lm initial output at 3000K with CRI 81. Rated for a 12,000-hour average life, it's built for universal operation in enclosed fixtures.
WATTAGE 20W CMH / HID | LUMENS 1,600 lm Mean 1,200 lm | COLOR TEMP 3000K CRI 81 | BASE G12 Enclosed | RATED LIFE 12,000h Universal |
Technical Specifications
| Item Number | 29703 |
| Product Code | CMH20T/U/830/G12 |
| Lamp Type | Ceramic Metal Halide (CMH / Constant Color) |
| Bulb Shape | T4.5 |
| Base Type | G12 |
| Lamp Enclosure Type (LET) | Enclosed fixtures |
| Operating Position | Universal |
| Wattage | 20W |
| ANSI Ballast Type | C156/M156 |
| Case Quantity | 12 |
| Maximum Overall Length (MOL) | 3.56" |
| Light Center Length (LCL) | 2.18" |
| Rated Average Life | 12,000 hours |
| Initial Lumens | 1,600 lm |
| Mean Lumens | 1,200 |
| Color Temperature | 3000K |
| Color Rendering Index (CRI) | 81 |
| Additional Information | UV Control |
| UPC | 043168297035 |
Product Overview
The GE 29703 CMH20T/U/830/G12 is part of GE's Constant Color® CMH® ceramic metal halide family, providing crisp white light with strong color rendering (CRI 81) for applications where accurate color and consistent output matter. It delivers 1,600 lm initial output at 3000K with a rated 1,200 mean lumens at rated life. This lamp requires an ANSI C156/M156 ballast — confirm ballast compatibility before ordering.
Rated for 12,000 hours of average life on a G12 base, this lamp is built for universal operation in enclosed fixtures.
Compatible Applications
- Retail, display, and accent lighting where color accuracy and consistent output matter.
- Commercial and hospitality lighting.
- General-purpose commercial and industrial fixtures rated for this lamp's base and wattage.
Before Ordering – Verify
- Confirm your fixture uses a G12 base before ordering.
- Confirm your ballast is rated ANSI C156/M156 for this lamp.
- Confirm the fixture supports Universal operation.
- Confirm the fixture is rated for enclosed use, per this lamp's classification.
- Verify Maximum Overall Length (3.56") and Light Center Length (2.18") clear your fixture.
Safety and Handling Guidelines
- Disconnect power before installing or servicing.
- Use only with a compatible, correctly rated ANSI ballast for this lamp type.
- Install only in a fixture rated for this lamp's base, wattage, and enclosure classification.
- Allow the lamp to cool before handling; do not use if the outer envelope is cracked or broken.
Compliance
- Manufactured by GE Lighting (Constant Color® CMH® portfolio).
- ANSI Ballast Type: C156/M156.
Ordering Information
- Item Number: 29703
- Product Code: CMH20T/U/830/G12
- UPC: 043168297035
- Case Quantity: 12
For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.
