As the ogee system is not symmetrical, internal and external corners are different fittings.The product image clarifies the difference but the most common use for an external 135 degree angle is at the two outermost angles on a fascia board that runs above a bay window.
The Cast Iron Ogee Gutter External Angle - 135 Degree x 100mm Primed would be best suited for roofing professionals or contractors looking to install high-quality, durable gutters that are perfect for use in a variety of climates and weather conditions.
