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 Ventilator Car type.

"VA" - Vegetable Ventilator. A car equipped with insulation, but having common box car end and side doors which afford no protection against heat or cold (1/17-3/29).
 
"VA" - Fruit-Vegetable Ventilated Box. Similar in design to general service box car, but with either end and/or side ventilators, and with or without double sliding side doors. When equipped with double doors, one door is solid and the other screened (7/32-1/68).
 
"VM" - Fruit-Vegetable Ventilator. Similar in design to ventilated box car, except that it is partially insulated (7/32-1/68).
 
"VS" - Standard Ventilator. A car equipped with insulation, including insulated side, end and top openings, and ventilating devices without ice tanks (1/17-3/29).
 
"VS" - Fruit-Vegetable Insulated Ventilator. A house car equipped with insulation and hinged swinging side doors and means of ventilation. Not equipped for refrigeration, although sometimes provided with shallow boxes under hatches (for ventilating openings) to protect lading, but not to contain ice. Sometimes called "Produce Car" (7/32-1/68).
 
Notes:
 
1 - Cars having special heating equipment for the protection of commodities against freezing to be covered by affixing the letter "H" to the designating symbol (3/28-1/80).