Most effective when being used in areas such as a conservatory or garden shed, this product can be the key to keeping your guttering system in one cohesive unit that serves your entire property. As a larger alternative to the standard 90 degree external corners, these 135 degree corners are the perfect component to tackle more challenging environments. Stainless Gutta Standard Box Dimensions Width: 90mmHeight: 65mm Please note: One joint must be ordered for each length of gutter, gutter section and corner.