The industrial sectional door with insulation is made of special panels, which are constructive of galvanized steel iron with thickness polyurethane about 4.5 cm. the door can be constructed till 7 m width and 6 m height. The panels are sound and heat isolated and by this way we accomplish the perfect weatherproofness, installing on all four points special rubbers. On the door could be istalled windows (ports), in square or oval shape, with dimension about 663mmx343mm, with double glass and a special pressed rubber perimetric for the total insulation. There is also the chance of installing a "small passing door" on the garage door which "breaks" following the garage door' s route. It could be asked painting in different colours (RAL) inside and outside separately.