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  • UL1618 for Hearth Pads & Backings
  • UL127 Standard for Factory Built Fireplaces
  • UL1482 Standard for Solid-Fuel Room Heaters
  • UL103 Standard for Factory Built Chimneys
  • UL2523 Solid Fuel Fired Heaters & Boilers
  • UL1777 Standard for Chimney Liners
  • UL2561 STandard for 1400 Degree (F) Factory-Built Chimneys


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