Largest LRI excluding the Chambers CD 124.5, 317, or the 317.5? The standard Side Tab on the right is 2 inches tall. The LARGE L Tab style is a whisker over 2 3/4 inches tall and 2 1/2" diameter at the mushroom end. Check out the other pictures for a little history about this rare LRI. Sorry the LRI's are shown upside down in picture!