Abstract: A weatherstrip tape includes an elongated body of resilient plastic foam material rectangular in cross section and having a pair of opposed faces. A pair of longitudinally extending parallel coplaner anchor strips of plastic material along their inner edge portions overly one face of said body and are secured thereto. Outer edge portions of said anchor strips extend laterally from opposite sides of said body. Said anchor strips are adapted for manual folding into parallel engagement, with said outer edge portions adapted for projection into and anchoring within a clearance space with the elongated body adapted for sealing over such clearance space.