Model: Air Techniques 53020, Air Techniques 53020-1, Air Techniques 53021, Air Techniques 53021-1, Air Techniques 53170, Air Techniques 53171, Air Techniques 53173, Air Techniques 53174, Air Techniques AirStar 10D, Air Techniques AirStar 10M, Air Techniques AirStar 21D, Air Techniques AirStar 22D, Air Techniques AirStar 30D, Air Techniques AirStar 50D, Air Techniques AirStar 70D, and Air Techniques VacStar 20
