Symbol 3458 from ISO 7000 - Title/Meaning: Operator cabin, recirculating air flow Function/description: To identify the control that prevents entrance of air from outside the operator cabin and allows the cabin air to recirculate. To indicate the operational status of the recirculating air flow function.
pay attention to orientation of symbolAdditional information: 
Symbols applicable to specific machine forms may be substituted for this symbol.
Own work using: iso.org/obp/graphics/grs/4e96773f-5df0-4573-a0b9-301c3e67b6ad 200.png
Vectorization:  Mrmw