Verify that a specific chimney liner system model is UL 1777-listed using UL Product iQ before specifying it for a masonry-chimney reline job.

domain: productiq.ulprospector.com · 4 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗

Steps

  1. Go to productiq.ulprospector.com and create/sign in to a free account (required on first visit only)
  2. Search by manufacturer name, model number, or the UL file number printed on the liner's listing label
  3. Filter/confirm the listing standard shown is UL 1777 (chimney liners), not UL 103 (factory-built chimneys) or another category
  4. Check the listing's flue-gas temperature rating (UL 1777 covers systems rated up to 1000°F continuous) against the appliance's actual output category

Known gotchas

Related routes

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Use UL Product iQ to verify a UL-certified roofing system under the TGFU (Roofing Systems) category
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