Keep dirt, dust and bugs out with Vent Tape for polycarbonate. Apply to bottom of polycarbonate sheets. Can also be used in a variety of industrial applications including sealing, holding, reinforcing, identifying, masking, protection and splicing. For optimum efficiency, couple with our flame-retardant foil tape (DH8004) that should be applied to the top of your polycarbonate sheets. Non-woven, synthetic backing with acrylic adhesive. Good burst strength.