Need clear for HP9000s

HI. My name is Michael. I print using an HP9000s. I'm looking for a good clear material to print on. The company I work for is Go Plastics in Canton, GA. We make decals for magazine racks that are made from linear low density polyethylene. We have previously used an acrylic clear material with a very aggressive permanent adhesive. The company the sells the material can supply us with master rolls (60" wide x 150') but they have a minimum of 5 rolls. We don't need that many rolls. We might use one roll in a roughly 8 month period. I can find all kinds of clear vinyl but since it tends to yellow in the outdoors we really need to find something that is either an acrylic material or it's equal. Does anyone know of any material like this? Ant help is greatly appreciated.
Thanks.