Indow window inserts preserve your original windows while revolutionizing their performance. With a sleek design that blends into your existing windows, our inserts are easy to install and don’t cause lasting damage to your window frames – unlike other window solutions.

We manufacture every Indow window insert to custom dimensions and ship them all over the U.S. and Canada. Check below to see if Indow inserts are available in your area.


We developed our laser measurement process to create inserts that fit precisely every time, even when the window frames aren’t square. At Indow, we know unique problems require custom solutions. Get a free estimate today from one of our outstanding representatives.

What Do They Cost?

Consider the cost and disruption of replacing your windows. A vinyl window averages $66-$87/sf. A wood window averages $71-$109/sf. With Indow inserts averaging between $30-$43/sf MSRP, your window project can cost a fraction of other options.

Standard Grade

indow windows cost for standard grade window insert is $27 per square foot

Our workhorse interior storm window insert blocks drafts and reduces outside noise.

Performance Grades

indow windows cost for premium grade window insert is $36 per square foot

Our 4 options in performance grade inserts provide superior protection against noise and light.

Commercial Grade

indow windows cost for commercial grade window insert is $41 per square foot

Industrial strength insert with a scratch-resistant coating can be cleaned with common products.

If there’s a dealer near you, a dealer will laser measure your windows and also install the inserts. They will cover all costs in your estimate, which normally includes a measure and installation fee as well as your local sales tax.

Compare To Replacement Windows
Indow is fully operational making window inserts that bring comfort and quiet to your home and work spaces. Our production team is using Clean Manufacturing principles we have developed to keep them safe. No one needs to enter your home to measure or install our inserts. We ship a self-service measure kit (sanitized between each use) and deliver the inserts to your door. Just pull the insert from the box and they are ready for installation. We look forward to serving you.