The Harcon Universal Heavyweight Dry Fix Valley is manufactured in high performance GRP which lasts as long as lead, is tougher, cheaper, more resistant to accidental damage and is less prone to theft or vandalism.Recommended for use with slates.PropertiesLength: 3m.Width: 280mm.Upstand height: 70mm.Thickness: 2mm.standard weight.OverlapRoof pitch: 17.5 to 22 - 350mm lap.22.5 to 29 - 300mm lap.30 to 39 - 200mm lap.40 to 49 - 150mm lap.FeaturesLasts as long as lead, minimum 30 years.At least as durable as lead.More resistant to accidental damage.Less prone to theft.Quicker to install.Similar appearance to lead.Considerable cost savings.Suitable for use on roofs with pitches 17.5 to 49.Can accommodate a maximum difference between two rafter pitches of 15.