System roof ventilation - Article 158, mounted on the roof, near the ridge elements. Responsible for the ventilation of the space between the thermal insulation and boards or OSB. Roof ventilation is available in the standard version (plastic colored in mass, black and brown colors) and in the version with a shingle-colored sprinkle (red, green, brown). Used in the inter-rafter spaces. The dimensions of the roof ventilation are 50 x 32 cm. Height 62.8 mm without topping.