Description: U-POLĀ® FIBRAL LITE UP0766 Lite Fiber Glass Filler, 1 qt Tin, Yellow, Fibrous/Paste FeaturesSpreads like a short strand yet bridges holes like a long strandNon-sagging even on vertical surfaces - spreads, adheres and finishes like a polyester fillerForms a hard, durable surface that is still smooth and very easy to sandWaterproofCan be finished with putty or glaze or directly primed Product DescriptionFibral Lite Fiberglass Filler takes the place of both short and long strand products. Its lightweight formula can be easily shaped and sanded once cured.