GE 43818 MVR400/C/I/U

GE 43818 MVR400/C/I/U — 400W I-Line Multi-Vapor Metal Halide Lamp (Mercury Retrofit)

The GE MVR400/C/I/U (order code 43818) is a 400-watt I-Line Multi-Vapor® metal halide lamp (mercury-retrofit) with a ED37 bulb and E39 Mogul Screw base, designed as a direct replacement lamp for HID fixtures built around a H33/M59 ANSI ballast circuit.

Technical Specifications

Product Overview

The GE MVR400/C/I/U is a 400-watt I-Line Multi-Vapor® metal halide lamp (mercury-retrofit) finished in clear glass, rated at 70 CRI and 3700K color temperature. It ships with a ED37 bulb envelope on a E39 Mogul Screw base and is built to operate on a H33/M59 ANSI-type mercury ballast.

GE I-Line Multi-Vapor® lamps are designed to convert mercury-vapor sockets to white metal halide light. Per the GE catalog, they operate on standard CW and CWA mercury ballasts and auxiliary equipment and deliver more light and better color than the mercury lamps they replace.

At 10,000H/15,000V hours rated life and 32,200H/35,000V initial lumens, this lamp is intended as a like-for-like replacement for GE order code 43818 — confirm the code printed on your existing lamp or fixture ballast label matches before ordering.

Compatible Applications

• Fixtures wired for a H33/M59 ANSI-type mercury ballast circuit
• E39 Mogul Screw socket fixtures rated for 400W mercury-retrofit lamps
• General commercial and industrial area lighting
• Parking lot, warehouse, and wall pack fixtures already equipped with a matching ballast
• Burning position: U (Universal (any burning position))

Before Ordering – Verify

• Confirm your fixture's ballast is rated ANSI type H33/M59 — GE lists this I-Line lamp for standard CW/CWA mercury ballast circuits; pulse-start and probe-start metal halide ballasts are not interchangeable with mercury ballasts, so verify the ballast label before ordering.
• Confirm base type (E39) and burning position (U — Universal (any burning position)) match your fixture — operating a lamp outside its rated position can shorten lamp life.
• GE lists a restricted/special fixture designation (“S”) for this lamp — verify fixture enclosure and orientation requirements with GE documentation before ordering.
• The GE catalog lists the finish for 43818 as "Clear" although the model code (/C/) and the 3700K / 70 CRI ratings indicate a coated lamp; confirm the finish with GE before ordering.
• Confirm order code 43818 (GE MVR400/C/I/U) exactly matches the lamp or ballast label on your existing fixture before purchasing a replacement.
• Case pack quantity is 6; confirm this meets your order needs.

Safety and Handling Guidelines

• Contains mercury — dispose of in accordance with local, state, and federal regulations; do not place in regular household trash. Use a certified lamp recycler where required.
• Always de-energize the fixture and allow the lamp to cool completely before relamping or servicing.
• Metal halide lamps carry a small risk of non-passive (violent) failure at end of life or if operated past rated life; use only in a fixture with the enclosure/containment specified by the fixture manufacturer.
• After a power interruption, allow the lamp to cool before it will restrike and return to full output — this is normal metal halide behavior, not a defect.

Compliance

• Contains mercury; recycle/dispose of per applicable RoHS, EPA, and state lamp-disposal regulations.
• Manufactured to GE's published ANSI lamp/ballast standard for the listed ballast type.

Ordering Information

• GE Order Code: 43818
• Case Pack Quantity: 6
• Sold individually through ADL Supply; case-pack pricing available on request.

For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.