What size holes should I drill for my Deck Lights?

For drilling Deck Light holes, we recommend using spade bits with the following sizes:

• Warm White 18mm Deck Lights [DLWW18K]: 13mm hole
• Warm White 30mm Deck Lights [DLW3006]: 22mm hole
• Warm White 45mm Deck Lights [DLW4510]: 32mm hole
• RGB Colour 30mm Deck Lights [DLRGB3003]: 22mm hole
• RGB Colour 45mm Deck Lights [DLRGB4505]: 32mm hole