The 2200-series cars (numbered 2201–2350) were manufactured by the Budd Company of Philadelphia, Pennsylvania and first delivered to the CTA in 1969, before the Dan Ryan branch (now known as the south end of the Red Line) opened. 150 cars were ordered, and all delivered in 1969 and 1970. These cars were the last to feature the blinker door configuration, in which the doors to the train opened inward into the car rather than slide horizontally. These doors, which had a much narrower opening than the newer sliding doors, were unable to accommodate a wheelchair. Because of this, all 2200-series cars that ran in regular service on the Blue Line had to be coupled with a married pair of 2600-series cars, in order to comply with the Americans with Disabilities Act of 1990. In addition, during eight car operation on the Blue Line, the 2200-series cars were referred to as belly car service (which means that they are not at either end of the consist), with 2600-series cars on the ends of the train.