GBG Undercover - to suit Granitime Crown Topper Clear Tray that covers/seals the bowl and connects to the Crown Topper Upper Part. The difference between the Undercover and the Cover is that the Undercover has 4 nipples to allow it to connect itself to the crown topper as well as also having a hook on the back of the undercover which allows it to connect to the bowl. Manufacturer Part Number: GT07 SL3GS36009C SKU: 1712336009 Colour: Clear Material: Perspex