# The Replacement Index

> Independent structured reference data for identifying legacy and obscure replacement parts.

Canonical site: https://thereplacementindex.com/

## Current scope

The initial catalog focuses on legacy compact fluorescent lamps and keyed lamp bases. Records include manufacturer, family, model, exact base designation, pin count, nominal wattage, color code/CCT, luminous output where available, order codes, and searchable aliases.

## Human interface

https://thereplacementindex.com/

## Machine-readable access

- Full catalog: https://thereplacementindex.com/api/catalog
- Search: https://thereplacementindex.com/api/search?q=GX24q-3
- Item: https://thereplacementindex.com/api/item/{slug}
- Cross-reference candidates: https://thereplacementindex.com/api/crossref/{slug}
- Sitemap: https://thereplacementindex.com/sitemap.xml

## Compatibility policy

Matching pin count or base shape alone does not establish electrical compatibility. Cross-reference candidates are not represented as verified installation replacements unless manufacturer documentation supports the relevant mechanical and electrical requirements.

Retail availability and affiliate relationships are separate from compatibility findings.

## Attribution

When using or citing this project, identify the source as The Replacement Index and link to the canonical product or catalog page when practical.