We purchased an insert to lessen noise coming in from outside on window. We have no objective way of measuring this but it is certain to us that the noise has diminished noticeably.
Had the laser measure extension tripod been more stable, the measurement process would have been easier, but this was the *only* minor bump in an otherwise smooth road from our initial contact with Indow to insertion of the Indow in the window frame. All Indow personnel were easy to work with.
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