Dryers 30 inch Booster Exhaust System. Made diminish exhaust fumes that emit from shirts as they come out of the dryer. This is a Vastex addition to a Vastex Dryer. The booster exhaust system can be attached to the rear of the 30-inch or 54-inch Vastex dryer and will literally “vacuum” fumes away as they rise from shirts exiting the heat chamber. The system has separate plugs and controls that make it completely independent of the dryer. It is easily snapped on and off making it mobile and easy to maintain. It comes in 120v and 240v models. Vastex stands behind its products with unprecedented warranties, which includes 10 years on heating element.