On-floor Exhaust Extractor Economical Versatile Vehicle Fume Extraction System Key System Components Underground piping and connection points: A network of air ducts buried underground, featuring concealed connection points or floor pits with covers at surface level. Extraction hoses and nozzles: Stored underground or in floor-mounted enclosures when not in use; they are pulled out and connected to vehicle exhaust pipes during operation. Centrifugal fan: Generates powerful