Fifth Wheel Tandem Axle Fender Skirt FS2171 is designed for certain models of Thor Travel Trailers including: Komfort. The legs of the fender skirt curve underneath the trailer. Each skirt features a durable high-impact ABS plastic construction with a textured finish. The FS2171 fender skirt measures to 66-3/4" x 11-1/4". Measuring forms are available on the manufacturer's website to ensure a proper fit with your model.