Outside Mount Length Measurement

For outside mount length measurement in this example you specify 46" outside mount.In this case the headrail will fit obove the window and the blinds will extend beyond the window seal to close any light gap. It might varry with different window treatments.

Outside Mount Width Measurement

For outside mount width measurement in this example you specify 34" outside mount. you add 4" to the original width so the blinds will be 2" extra on each side of the window. It might varry with different window treatments.

Inside Mount Length Measurement

For Inside Mount Length measurements in this example you specify 41" Inside Mount.The blinds will cover all the window without any gap in length. It might varry with different window treatments.

Inside Mount Width Measurement

For inside mount width measurement in this example you specify 29.00" Inside Mount. The headrail will fit as the blinds, but you can expect some light gap on the sides of the blinds if the window is not even all the way

as is the case in this example. It might varry with different window treatments.