Mini PVC Trunking External Angles. These Mini PVC trunking external angles allow fast installation. Suitable for use in commercial buildings. They clip onto outside of a right angled join to provide a tidy, safe and professional trunking joint. Available for the following mini PVC trunking sizes: 16x16mm trunking: use < 917-1586') 917-1586/ 25x16mm trunking: use < 917-1580') 917-1580/ 38x16mm trunking: use < 917-1599') 917-1599/ 38x25mm trunking: use < 917-1592') 917-1592/. Colour: white Material: PVC Supplied in a pack of 2