red snow depth measuring stick and galvanized sheet steel mechanical duct

abstract abstractn air aluminum architecture background blue bright building chimney circulation construction control cool cooling corrugated daylight depth design duct exhaust exterior galvanized groof grounding guard house ice industrial industry installed lightning marker measuring mechanical mechanics metal nature orange outdoor plant polar protection rod roof roofin sky sloped snow snowy spike steel stick structure system technology temperature top urban vent ventilation vents view vortex winter