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LEGACY REFERENCE

SATCO FML27 6500K GX10Q-4

DETAILED REFERENCE

How to identify and replace SATCO FML27 6500K GX10Q-4

This page documents the SATCO FML27 6500K GX10Q-4, a 27W FML lamp using a 4-pin GX10q-4 base. The catalog record identifies color code 6500K (6,500 K in this catalog record) and 1,400 initial lumens. Manufacturer order code S6385 provides another high-value identifier when it is present on the lamp or packaging.

For a replacement decision, use the complete combination of markings rather than one feature. A lamp with the same base can still differ in wattage, keying, color, pin configuration, ballast requirements, or other electrical characteristics.

MANUFACTURER MODEL NOTES

SATCO S6385 / FML27 GX10q-4 manufacturer notes

These notes come from the exact SATCO manufacturer record for FML27 6500K GX10Q-4.

  • SATCO specifies S6385 as a 27W T4 compact fluorescent lamp with a four-pin GX10q-4 base and 6500K daylight output.
  • The manufacturer lists 1,400 initial lumens, 10,000 rated hours, non-dimmable operation and ballast-dependent operating temperature.
  • This GX10q-4 record should be matched by model/SKU, wattage and ballast requirements; the four-pin base alone is not a substitute decision.

Manufacturer source: SATCO — S6385 FML27 6500K GX10Q-4

Identification checklist

  1. Read the full lamp marking.Look for FML27 6500K GX10Q-4 and order code S6385 rather than relying only on the shape.
  2. Confirm the base and pins.This record uses 4-pin GX10q-4. A similar-looking keyed base or a different pin count should be treated as a different lamp until verified.
  3. Match wattage and color identity.Reference values here are 27W and color code 6500K. Color codes that look similar can identify different variants.
  4. Check the fixture electronics.Verify ballast/control gear, supply voltage, socket keying, and manufacturer instructions before installing a fluorescent substitute or LED retrofit.

Search names and aliases

Older lamps are often listed under shortened model strings, base-first descriptions, or manufacturer order codes. These are the aliases currently indexed for this record.

27W GX10Q-4FML27 6500KGX10Q-4 27WFML27S6385

Before buying a replacement

  • Match the exact GX10q-4 base and 4-pin configuration.
  • Confirm the original 27W rating and the fixture's approved lamp range.
  • Match color code 6500K when maintaining the same light color is important.
  • Use order code S6385 as a strong cross-check when a seller provides it.
  • For LED conversions, confirm whether the replacement is ballast-compatible, ballast-bypass, or otherwise requires a specific wiring method.

The Replacement Index separates reference specifications from retailer listings. A product appearing for sale does not by itself establish compatibility.

Frequently asked questions

Is GX10q-4 enough to identify a replacement?

No. Match the complete lamp identity, including base, pins, wattage, color information, and the fixture's electrical requirements.

Can I replace FML27 6500K GX10Q-4 with LED?

Possibly, but only with an LED product designed for the exact socket and electrical configuration. Some retrofits use a compatible ballast and others require different wiring.

What should I compare first?

Start with manufacturer order code S6385 when it is visible, then confirm the full model, base, wattage, pins, and color code.

Source provenance

The specifications above come from the source records attached to this catalog entry. Retail marketplace data is maintained separately.

  • SATCOS6385 FML27 6500K GX10Q-4 · supports exact manufacturer specifications · accessed 2026-09-09