All profiles and sizes of our zinc gutters come in 2.4mtr lengths. The 0.7mm zinc used for the large box guttering is relatively lightweight, yet strong enough to have a life expectancy of over 100 years.Zinc gutter boasts some unique properties such as itand#039;s change of colour through different shades of grey (if left to age naturally) and itand#039;s even been documented to turn white when installed in coastal locations.The large box gutter length is a 120mm system and has a capacity of 10.3 litres per metre.To view or download an installation guide for our zinc guttering systems, click here.