Mini PVC Trunking Internal Angles. These Mini PVC trunking internal angles allow fast installation. Suitable for use in commercial buildings. They clip on the inside 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 < 917-1596') 917-1596/ 25x16mm trunking: use < 917-1606') 917-1606/ 38x16mm trunking: use < 917-1609') 917-1609/ 38x25mm trunking: use < 917-1603') 917-1603/. Colour: white Material: PVC Supplied in a pack of 2