How it works
Open fires that belch forth clouds of smoke and smuts, with disastrous results to decorations and furnishings anthracite burning boilers and cookers that you dare not light in windy weather because of obnoxious fumes pilot-flame controlled gas and oil boilers and room heaters that will not stay alight, or burn erratically in windy weather all can be cured with the O.H. Chimney Cowl or Pot, which convert downdraught into an updraught irrespective of the strength or direction of the wind. It is so remarkably successful and so completely reliable that should it fail to cure the downdraught in any chimney however bad we will refund the price of the Pot or Cowl if we are notified in writing and the product is returned to us within three months of supply. There could be no greater proof of its efficiency.
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