Designed to close gaps in roof & sidewall applications. Material is pre-cut to conform to metal panel configurations. Applications include closing the openings at the ridge (peak of the building) or at the eave (gutter-line of a building). 1.8 lb. Density polyethylene foam is designed to withstand harsh weather elements including moisture & ultraviolet rays. Optional pre-applied adhesive helps to keep closure in place before roof panel is fastened. Interlocking dovetails provide a secure end to-end fit, eliminating any potential gaps.