Float glass is a type of glass that is made by floating molten glass on a bed of molten metal, typically tin, to create a smooth and uniform surface. It is a common type of glass used in windows, doors, and other architectural applications.

Float ultra white glass, on the other hand, is a type of float glass that has a higher level of clarity and transparency than regular float glass. It is made using special materials and processes to reduce the amount of iron oxide, which is what gives regular float glass a slight greenish tint. This results in a glass with higher light transmission and better color rendition, making it ideal for applications where color accuracy and high levels of transparency are desired, such as in display cases, museum exhibits, and high-end architectural applications.