Ok, so I've had many requests for colossal plinth blocks which can transition almost 7" crown molding! These tremendous inside corners are approximately 12" from top to bottom, dimensions of the transition piece (top) are a surface height of 6" and a surface depth of 4 5/8". The purchase price is for 1 BLOCK. These have fabricated to use with moulding up to 7", they are much different than the standard home depot block in that i've used a colonial 6 1/4" moulding in the tear drop for added detail. I can also adjust the height and depth more/less as needed, these have also been primed with Zinsser 123 stain blocker and painted two coats with Benjamin Moore super white semi-gloss . I also have the middle transition block which bridges two pieces of crown . I also have outside corners! These can also be fabricated with standard shaped moulding for any size transition instead of the colonial shape! e-mail me with quantity of each needed and I will create a listing for you.