Inside Mount
Requires at least 2" frame depth for most treatments.
Window should be square to work properly . Measure diagonally in both directions and the variance isn't over 1/2".
Width • Measure to the nearest 1/8" at top, middle and bottom.
• Use narrowest measurement as your ordering width.
• For roller or solar shades, use only the top width.
Length
• Measure to the nearest 1/8" left, center and right side.
• Use the longest measurement as your ordering height except for horizontal sheers,
vertical blinds and sheer verticals where you will want to order the shortest measurement.
Depth
• Measure from the wall to the glass.
• Account for any obstructions like handles or locks.
• Order a flush mount depth that is the same or less than your frame depth.