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Custom Portable AC Window Kit for Casement Windows

Install a portable ac unit without the frustration. Our crystal clear Portable AC Window Kits are specifically designed to vent portable air conditioners out casement windows. Casement window vent kits are CNC machined out of very durable 1/4” acrylic (plexiglass) and are custom cut to fit your crank window perfectly. Each order comes with a quick attach vent system that locks into the panel to create a better window seal and make hose hookup a breeze. Just specify the size of your portable aircon hose when ordering.


Your insert will be handed off to UPS according to the lead time shown at the very top of website (for mobile, it's at the top of the fly out menu).

Ground (3-5 business days) is free. Need it sooner? The following services are available to purchase at checkout: 2nd Day Air ($35), Overnight ($75). 

How to measure

Click here for our step by step measuring instruction video. 

In most cases these function as direct screen replacements, so measure the width and height of your window screen (outside edge to outside edge). But watch our video here first to make sure you got it right.


Installation takes 5-10 minutes. Window inserts are held in place with glazier push points or clear adhesive tape which come with your order. Strips of Velcro can also be used, just click the checkbox on the order form and we'll include some in your order.

What's Included
  • Crystal clear window insert (with white protective masking)
  • Quick attach vent for easy and secure hose hookup
  • Installation Kit (glazier push points, clear adhesive tape and installation instructions)

Our panels are made from thick 1/4" acrylic. The corners are rounded (1/8" radius) for safety. All panels are cut 1/16" shorter than the measurements given. This method will give you a perfect fit. Most window frames are not square and cutting them to the size given can result in a panel not fitting.

Perfect Fit Guarantee

Free remakes

Free Shipping

For most U.S. orders

Easy Setup

Installs in 10 minutes

See how it works

Measuring & Options