Create tight, reliable seals for your Britmet roofing system with this 3m valley, crafted in GRP (glass-reinforced plastic) right here in the UK.Compatible with all of Britmet's leading lightweight roof tiles, this maintenance-free GRP valley is simple to fix in place with its dry-fix installation and measures 360mm wide.Choose this robust, cost-effective alternative to lead and zinc valleys to complete your project to the best, most effective standards.