The tape consists of modified PA especially reinforced with a combination of PET film. The tape consists of five flat layers, which give it a variable sd value. This self-adhesive fastening strip makes it very simple to apply the tape. One edge of the strip contains self-adhesive fastening strips on both sides with a covering film used for fastening to window frames, doors, etc. The other edge of the strip is fitted with a butyl adhesive component, likewise with film that tears off. The self-adhesive strip enables attachment to jambs, lintels and parapet walls, even at low temperatures. Made primarily for sealing and insulating the Den Braven 3D system used for new construction and reconstruction with the replacement of windows in pre-prepared "trimmed" jambs.