PLEASE NOTE: CAP ONLY Large Slate Vent is a large capacity ventilating slate to suit 600mm x 300mm (24 x 12) and 500mm x 250mm (20 x 10) double lap slates, man-made or natural, for roofs with a pitch over 20. Product features & benefits Low profile design makes it unobtrusive on the roof line Fits perfectly with adjacent slates Slate grey cap blends in with most man-made or natural slates Built-in downpipe to ensure direct ventilation path into the roof space Fully wind tunnel tested Adaptor and flexipipe available for soil ventilation or mechanical extraction Prevents entry of birds and large insects Area of application Suitable for: 600mm x 300mm (24 x 12) and 500mm x 250mm (20 x 10) double lap slates Man-made or natural slates Roofs with a pitch over 20 Material / Colour Rigid PVC / Slate grey, matt finish Dimensions / Weight (per carton) 600mm long x 380mm wide x 85mm deep (excluding adaptor/downpipe) / 14.5kg Related products When used as high level ventilation, this product should be used in conjunction with Klober eaves ventilation products such as Easy-Fit Soffit Strips, Soffit Vents or Fascia Vents.