blocks are approximately 6 3/4" from top to bottom, dimensions of the transition piece (top) are height 3 1/2" and a depth of 2 5/8". purchase price is for 15 blocks. 10 inside corners and 5 tabbed outside corners. these have also been primed with Zinsser 123 stain blocker and painted two coats with Benjamin Moore super white semi-gloss paint! block is pictured with standard 3 5/8" crown moulding. The free transition block bridges 3 5/8" crown molding on an outside corner. Each additional outside transition block is plus free shipping with this listing. I also have middle transitions as well. message me for package price and I will create a listing for you. Since This listing was created for an existing customer quantities and specifications can be changed and price re-adjusted!