How LucentMark Window Inserts Work

LucentMark is developing clear, made-to-fit window inserts for portable air conditioners. Each LucentMark window insert will be manufactured in Australia to suit the required window dimensions and include a secure connection for the portable air conditioner exhaust hose.

The aim is to provide a cleaner, more reliable alternative to loose standard kits and makeshift window setups — without cardboard, fabric seals or taping the exhaust hose into place.

Three-panel collage showing different views of a modern black-framed window installed in a home interior. The top-left panel shows one window with the upper left pane open; the top-right shows a second window with the sash tilted upward; the bottom panel shows a larger floor-to-ceiling window with a view of trees and sky outside.

1. Identify your window type

LucentMark is being developed for several common window configurations, including casement windows, awning windows, sliding windows and sliding doors.

Your window type determines how the insert will be sized and fitted. You won’t need to understand technical window terminology when ordering — clear photos and examples will help you identify the right option.

A person uses a yellow tape measure to determine the width of a black-framed window installed in a beige wall, with an outdoor green yard visible behind it.

2. Measure your window

Before ordering, you’ll follow a simple measuring guide designed for your window type.

We’re currently refining this process so customers only need to provide the measurements actually required to manufacture the insert correctly.

Detailed measuring instructions will be available before orders open.

A close-up of a CNC router cutting a circular acrylic piece on a transparent acrylic workboard, with a gray ring component resting nearby on the machine table.

3. Made to order in Australia

Once your window measurements and required configuration are confirmed, your LucentMark insert will be manufactured to order in Australia.

The clear acrylic panel will be cut to the required size and prepared with a dedicated connection designed to securely attach your portable air conditioner exhaust hose.

The finished insert is intended to be more than simply a piece of acrylic with a hole cut into it. The secure exhaust connection is a core part of the product, helping keep the hose properly attached without relying on tape or a loose push-fit opening.

Designed for a better-sealed setup

A made-to-fit rigid insert is designed to reduce unnecessary gaps around the window opening, while the secure exhaust connection helps prevent hot exhaust air leaking back into the room.

By creating a cleaner, better-sealed setup, the insert is designed to help your portable air conditioner cool the room more effectively.

A modern black aluminum double-hung window with one panel open, installed in a white wall of a bedroom. A clear arylic panel covers the window opening.

4. Fit the insert to your window

The window insert is being designed as a removable, non-permanent solution.

The final mounting method will depend on the window configuration, but the goal is the same: provide a secure fit without permanently modifying the window.

That makes LucentMark a rental-friendly option and also means the insert can be removed when your portable air conditioner is no longer required.

A white portable window air conditioner with a flexible white hose inserted into an open black-framed window, shown in a modern bedroom setting.

5. Connect your portable air conditioner

With the insert fitted, securely connect your portable air conditioner exhaust hose to the integrated connection and position the unit as normal.

The connection is being designed to hold the hose properly in place, helping avoid the loose fitment problems that can come with standard kits and improvised setups.

That means no taping the hose into the window and less risk of the exhaust hose slipping back into the room while the air conditioner is running.

When the system is no longer needed, the insert can be removed and stored for future use.

LucentMark is currently developing and testing its window inserts. Final product specifications, mounting methods and compatibility requirements may change before launch.