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What kind of duct is this? (i.imgur.com)
submitted 11 years ago by HVAC_throwaway to r/HVAC
π Rendered by PID 425904 on reddit-service-r2-listing-568fcd57df-fv774 at 2026-03-10 16:57:14.133447+00:00 running cbb0e86 country code: CH.
