Custom Portable AC Vent Kit for Awning & Basement Windows

The fit is good and the Nano Tape really holds the insert securely. I do like that I can still close the awning window during the hot part of the day.

An Engineering Marvel — Believe the Reviews! The reviews don't lie — this thing is every bit as good as everyone says. The price made me hesitate, but I threw caution to the wind and bought two. Zero regrets. I was so tired of MacGyver-ing my own adaptation (see photo of my "handiwork" — LOL), and this kit made all that DIY struggle a distant memory. My favorite part? The hose looks like it's floating in mid-air. Pure magic. And can we talk about the packaging? Hands down the best-packaged product I've ever received. Funny moment: I pulled out the "windows" and thought, wait, I didn't order brown! Turns out it was just the protective covering. They ship it as well as they build it — and that's saying something. Well done! — Julie

I thought we were stuck, unable to use a portable AC unit on the second floor of our old farmhouse. I'm grateful I stumbled across Martinson's acrylic window inserts! It opened up a world of possibilities for us and our comfort! The videos and instructions to get the proper measurements were great and straightforward. When it arrived, it fit perfectly, and the cutout for our Midea hose unit was an exact fit. I also ordered the screen units for our dual hose setup, and they fit exactly as they should. Very impressed!