The TERA rafter profiles (80mm x 125mm) have been designed with uniquewater guard side channels and cast aluminium end plates to allow for projections up to 7m per system. Widths are customised according to site requirements and available in any size up to 15m. The Tera system offers up to 105sqm of protection at the touch of a button. Linking multiple systems is also possible and made easy by our patented storm channel joining system that ensures 100% waterproof join every time. The TERA system also includes an integrated gutter system with internal drainage to carry away even the heaviest rain