blocks are approximately 6 3/4" from top to bottom, dimensions of the transition piece (top) are height 3 5/8" and depth 2 5/8". Purchase price is for 17 inside BLOCKS, 2 returns (1 left, 1 right) and 4 outside blocks totaling 23 pieces! One of each is shown in listing photo! These have fabricated to use with moulding up to 3 5/8". Since this was a special listing for a customer the quantity and specifications can be changed and the price re-adjusted to suit your needs.These can also be fabricated with colonial shaped moulding for any size transition! e-mail me with quantity of each needed and I will create a listing for you.