Prefinished which requires no coating. Eliminates the need for separate taping and topping compounds. Only the tapered edge needs to be immediately feathered, saving 75% labor and drying time. Ultra A Flex creates any inside or outside corners including 45 and 90 corners. Ultra A Flex will not crack, pop out, or chip. Self straightening, will cover up to 1 1 2" gap correcting framing mistakes. 100" Roll. No. ULT450: Ultra A Flex for inside or outside corners, 2 1 4" x 2 1 4" No. ULT325: Ultra A Flex lite for inside corners, 1 1 4" x 1 1 4"