Ster 4MA

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Example interior layout
Sample Installation with stainless steel grabrails and pole
Example layout on an articulated bus

The Ster 4MA, also known as the Aries, is a public transit passenger seat that was introduced in 2001. It is marketed by United States Seating (USSC) as the Aries 4MA in Canada and the United States.

The seat frame and backing is of stainless steel or powder coated carbon steel. The seat inserts may upholstered and padded or formed thermo plastic. For double seats, two widths are available: 35 or 37 inches. The inserts are interchangeable between the two widths as the spacing between the seats is what is widened. The grabrails may stainless steel or injection molded plastic. A headrest option, which goes over the grab rail, and a tubular armrest option are available.


The following agencies operate or have operated vehicles with this model seat:

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