This is the shake mount. It is shown in a mill finish. It is available in; mill finish, bronze anodized finish, and clear anodized finish.
It works with any rack that utilizes an L foot, as well as pro-solar and uni-strut.
The flashing is 18" x 18". 5" x 18" is exposed, 10" x 18" is under the next row of shakes, and 3" x 18" is under the second shake above as well as under the tar paper. It is imperative to place the flashing under the tar paper to maintain a waterproof installation. It is simplest to remove the shakes directly above to both; find the rafter, as well as insure the flashing gets under the tar paper, then reset the removed shakes.