Doddy Posted July 7, 2023 Share Posted July 7, 2023 https://youtu.be/8hUpWf_WhtQ Does anybody know why these are fitted to JNR Chimneys? 1 Link to comment
marknewton Posted July 8, 2023 Share Posted July 8, 2023 They serve two purposes, as a spark arrestor and to augment the draught. 4 Link to comment
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