Measure half an inch from the window frame on both sides of the
window and mark with pencil. Put the outside edge of the brackets on
the marks and place into the top of the window frame.
Place the blind over the window making sure it is centered at your
desired height. Mark the position on the wall with a pencil at each
end of the headrail. Measure approximately 1 inch from the marks
with a pencil. Place the outside edges of the brackets on these
marks and attach with screws.
Mounting the Shade
With the brackets installed and level with one another, remove the
wing nut from the screws and place the shade onto the brackets. With
the screws coming through the mounting slots on each end of the
headrail, reinstall the wing nuts onto the screws and hand tighten.