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3D Warehouse will be disabled on this version of SketchUp on Jan 31, 2023. Web services, like 3D Warehouse, need to be turned off in unsupported versions of SketchUp to maintain security.
This is a barometric draft regulator for an oil fired boiler, designed to be positioned on the flue pipe. This one is six inch diameter. Please download, rate, and enjoy! #draftcontroll #oil burner #oil fired #oil boiler #HVAC