Best purchase!!! I purchased three inserts for our primary bedroom windows. We live in a downtown area and over the years more and more development has led to increased high rises and traffic noise. I can say these inserts have drastically decreased the noise around us. Loud mufflers and reving engine noise was decreased by 90 percent! Normal outside noice decrease more than that. That makes a world of difference. I actually can sleep through the night now. Super easy to measure, order, and install. Highly recommend!

First of all…thanks Indow!!! First of all, I am an architect and I needed Indow inserts for 3 old casement windows which had warped and are now stewed closed on an enclosed mahogany framed porch. Working with Indow was very organized and really quite straightforward. Pricing was reasonable and their checking and confirming my measurements was extremely helpful!!! Indow inserts arrived on a timely schedule, beautifully packaged, and safely delivered. The inserts fit perfectly and have markedly reduced the incoming sounds (from the above ground Subway)!!! All good!!! Hope to do additional fixed windows on this enclosed porch in the future!!! Thanks Indow!!!

Bad experience Bad experience. I bought this product expecting a noise reduction which did not happen whatsoever. The only response I got is that performance can not be guaranteed. It was so frustating because they dont give you money back either. $700 trough the drain.

New windows are really expensive and… New windows are really expensive and can ruin the look of a house. These Indows are not the cheapest inserts on the market, but they are really clever, do not require permanent frames, are made very precisely (none of my hundred year windows were still square) and our home was a lot warmer this winter because of them. Replacement window salespeople promise the world in terms of ease and energy savings and rarely deliver. These are such a simple alternative that do just as good a job.

Cut bedroom decibel level in HALF. Impressed. 5 stars for a great product. I live next to a busy highway and it's been incredibly disruptive to my sleep. Indow has cut the decibel level in my bedroom by HALF. Impressed. My only gripe: Shipping took about a month, and instead of just saying "shipping takes a month" (which I would have been completely fine with) the company auto-sends an email after purchase saying "We have worked hard to absorb the supply chain issues that have affected the entire world". This is unprofessional and annoying and as dated as listing your pager number on a business card or fax number on your website. Companies need to stop blaming acts of God for your poor customer service department or slow response/delivery times. Deal with things out of your control, and stop making excuses because of them. (Especially THREE YEARS later)