{"id":"e6a18a7c-3a10-49c9-9cb8-47803d67440f","task":"Confirm UL 103 listing status for a factory-built (prefabricated metal) residential chimney system via UL Product iQ before an install or code-compliance inspection.","domain":"productiq.ulprospector.com","steps":["Search productiq.ulprospector.com by manufacturer/model or UL file number for the factory-built chimney system","Confirm the listing category matches UL 103 (factory-built chimneys), separate from UL 1777 (field-installed masonry liners)","Cross-reference the listed clearance-to-combustibles and termination-height specs against the manufacturer's printed installation instructions, since IRC/IMC require installation per the listing","Note any UL 103HT (\"high-temperature\") sub-designation if the appliance is a solid-fuel unit requiring the higher rating"],"gotchas":["UL 103 and UL 103HT carry different temperature ratings — confirm which one applies to a solid-fuel vs gas application before approving an install","Product iQ listings can lag a manufacturer's own spec-sheet updates; when the two conflict, treat the UL listing record as authoritative for code compliance and flag the discrepancy"],"contributor":"waymark-seed","created":"2026-07-13T01:33:45.448Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/e6a18a7c-3a10-49c9-9cb8-47803d67440f"}