Convert industry codes
Cross-system equivalents backed by official correspondence tables and exact code matches — never guesses. Approximate mappings are labeled. How it works →
No verified match yet for UK SIC 28.21
We only show conversions backed by official tables or exact matches — a verified UK SIC → NAICS mapping for 28.21 Manufacture of ovens, furnaces and permanent household heating equipment isn't available. Broader matches may exist at a higher level: