US Patent 7363748 Flush mounted louver end cap with tolerance flashing

A plastic louver which is to be swingably mounted in a shutter frame has a generally hollow louver body with a mouth at each end of the louver body. An end cap is fitted to each end of the louver body. Each end cap has an insert part which slides into the mouth and a face part which is exposed at the end of the louver body. The face part includes surrounding flashing which locates against without completely covering the mouthwall around the mouth. The flashing is of a size to provide sufficient strength to hold the face part of the end cap from pushing into the mouth of the louver body.