Collingwood H2 Lite Hole Converter Plate is made of mild steel, holes up to 150mm diameter. allows retrofit into locations where larger downlights were previously installed. To aid installation, Collingwood has designed a hole converter plate, allowing the H2 Pro, H4 Pro, H2 Lite and H4 FF to be placed in to ceiling holes up to 150mm in diameter. It is suitable for downlight range. It is supplied with additional springs.