< Venetian Blinds - Inside mounting >

* Width: Measure 3 points (Top, Middle, and Bottom) then Give us the shortest one.
* Drop: Measure 3 points (Left, Middle, and Right) then Give us the shortest one.

< Vertical Blinds - Inside mounting >

* Width: Measure 1 point (Top)
* Drop: Measure 3 points (Left, Middle, and Right) then Give us the shortest one.

< Roller Blinds - Inside mounting >

* Width: Measure 1 point (Top)
* Drop: Measure 1 point (Middle)