GE 71491 CMH39MR16/942/SP

The GE CMH39MR16/942/SP is a premium ConstantColor® Ceramic Metal Halide 39W spot lamp engineered for demanding commercial accent and display applications. Delivering 16,000 CBCP and 2,200 lumens of stable 4000K natural white performance, this system utilizes a GX10 twist-lock ceramic base configuration to optimize optical precision and color consistency across high-ceiling retail, museum, and architectural fixture frameworks.

ADL Supply Expert Application & Replacement Guide

The GE CMH39MR16/942/SP is primarily specified by lighting designers, electrical contractors, and facility managers across high-end retail showrooms, museum galleries, and architectural accent installations where a tight 12° beam must travel long throw distances without color shift or lumen depreciation. Unlike standard halogen MR16 lamps, this CMH lamp requires a dedicated 39W low-frequency electronic ballast conforming to ANSI C130/M130 — compatible GE ballast models include the GE 63044 (GEMH39-MSJ-MV) and GE 63045 (GEMH39-MSF-MV) — and will not operate correctly on magnetic or non-ANSI-matched electronic ballasts. The GX10 twist-lock ceramic base is a keyed, pressure-locking socket interface distinct from the two-pin GU10 found on standard halogen MR16 lamps, so contractors retrofitting existing halogen fixtures must verify socket compatibility or replace the socket before installation.

Detailed Product Specifications

• Brand: GE Lighting
• Product Line Series: Constant Color Ceramic Metal Halide (CMH)
• Manufacturer Part Number: CMH39MR16/942/SP
• GE Order Code: 71491
• ANSI Code: C130 / M130
• Core Technology: Ceramic Metal Halide — MR16 Reflector Lamp
• Wattage: 39W
• Initial Lumens: 2,200 lm
• Center Beam Candle Power (CBCP): 16,000 cd
• Beam Angle: 12° Narrow Spot (SP)
• Color Temperature (CCT): 4000K Natural White
• Color Rendering Index (CRI): 92
• Rated Average Lifespan: 12,000 Hours
• Base Type Configuration: GX10 Twist-Lock Ceramic
• Maximum Overall Length (MOL): 2.28 inches (58mm)
• Burn Position: Universal — Any Orientation
• UV Control: Integrated UV-filter glass envelope

Operation, Safety & Mounting Compliance

Ballast & Electrical Requirements

This lamp must be operated exclusively on a 39W low-frequency electronic ballast conforming to ANSI C130/M130 specifications. Operation on incompatible ballasts — including magnetic ballasts, high-frequency electronic units, or ballasts rated for standard MH lamps — will result in non-ignition, premature failure, or non-warranted lamp damage. Verify ballast compatibility against the ANSI code before installation. Recommended GE-matched ballasts are the GE 63044 (GEMH39-MSJ-MV) and GE 63045 (GEMH39-MSF-MV). Allow a minimum 15-minute cool-down period before re-lamping — ceramic metal halide lamps operate at high internal pressure and must not be handled or re-struck while hot.

Handling, UV Safety & Environmental Compliance

This lamp contains a small quantity of mercury sealed within the ceramic arc tube and must be disposed of in accordance with applicable federal, state, and local lamp recycling regulations — do not dispose of in standard municipal solid waste streams. The integrated UV-control glass envelope eliminates the need for a secondary UV shield in most open-fixture applications, but installers should confirm fixture manufacturer guidelines for open-face mounting. Handle the lamp by its base only — skin oils deposited on the outer glass envelope can cause thermal stress and premature failure. This product is RoHS-assessed per applicable lamp exemptions.

Bulk Commercial Lighting Supply & Project Support

ADL Supply delivers commercial-volume logistical fulfillment, tiered commercial contractor discounting strategies, and full pallet project quoting options to electrical accounts across the United States.

For formal wholesale inquiries, volume pricing modifications, or manufacturer spec sheet documentation, reach our commercial branch directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.