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Applications

Casement window portable air conditioner window seal kit

Keep the cool air in and the warm air out with our made-to-measure acrylic window seal kit for outward-opening casement windows. Designed to create a secure, airtight seal around your portable air conditioner hose, it helps improve cooling efficiency by reducing the amount of warm outside air that can re-enter your room. Each acrylic / PVC foam panel is precision cut to your exact measurements for a clean, reusable fit that lasts far longer than temporary fabric alternatives.

Every window is different, which is why we manufacture each window seal to order rather than supplying a one-size-fits-all solution. Whether you choose toggle or Velcro installation, you’ll receive everything you need to install your custom acrylic window seal quickly and start enjoying a cooler, more comfortable home.

  • Well insulated
  • Cut to size
  • Easy to install

Examples of window seals for the mobile air conditioner for casement windows

Below you can see examples of installed window seals on turn-tilt windows.

Window seal for a mobile air conditioner suitable for casement windows
Window seal for a mobile air conditioner suitable for casement windows
Window seal for a mobile air conditioner suitable for casement windows
Window seal for a mobile air conditioner suitable for casement windows
Window seal for a mobile air conditioner suitable for casement windows

Choosing the right installation method

Which possibility of installation of an acrylic window seal for mobile air conditioning depends on the direction of the rotation of your window and the structural situation at your property. If your window turns outwards, you can use either the mounting method with toggles or Velcro. If your window turns inwards, you can often only use the Velcro mounting method. If you can easily reach the outside of the window, you can also choose to install toggles on the outside. The advantage of this is that you can then always open and close your window without dismantling your acrylic window seal.

Checklist to see whether your window can be fitted with toggles or Velcro.

Toggles Velcro
Window opens outwards
Window opens inwards and is accessible from the outside Window opens inwards or outwards
Frame thickness at least 3.5 cm Frame thickness at least 1 cm
Longest side of the window up to 2 metres Longest side of the window up to 1.5 metres
No protruding hinges or window stays No protruding hinges or window stays

Tilt-and-turn windows often have protruding hinges. In that case, look carefully at how best to mount the window seal. In a tilted position, there are often hinges sticking out at the bottom of the window. To still be able to fit a window seal, you can order the sheet 1 cm shorter, so that it still fits, or opt for mounting on the outside with toggles.

When to choose toggles or Velcro

If your window turns inwards and the outside inaccessible. Then you can only use the mounting method with Velcro. This method is also easier to install and use. If your window is higher or wider than 1.5 metres, the toggle mounting method is the best option. Also, if you want to mount your window seal on the outside of the window, the method with toggles is the best option.

Also consider in your choice, the suitability of the surface you will mount in on. If you doubt the adhesion of the Velcro to your window, then it is better to choose the toggle mounting method.

Because every window seal is made to your exact measurements, accurate measuring is essential for a successful installation. Having helped customers order bespoke acrylic and PVC foam window seals, we’ve found that most fitting issues come down to a handful of common mistakes that are easy to avoid.

Common Measuring Mistakes We See

  • Measuring the glass instead of the window frame or opening – Always measure the area where the acrylic panel will sit, not just the visible glass.
  • Not accounting for protruding hinges or window stays – These can prevent the panel from sitting flush. If your window has protruding hardware or using the toggle mounting method where appropriate.
  • Ordering a hose opening that’s too small – Measure the outside diameter of your portable air conditioner hose and allow 5 mm of clearance for an easier fit.
  • Forgetting about window handles – Handles that protrude into the opening can interfere with installation. In some cases, telescopic handles may provide a better solution.
  • Rushing the measurements – Double-checking your dimensions before ordering helps ensure your custom-made panel fits correctly the first time.

 Taking a few extra minutes to check these details before ordering can save time during installation and help your portable air conditioner perform as efficiently as possible.

Tip!

Does your window handle stick out into the room, but you still want to place a window seal for your mobile air conditioner? You can find telescopic handles for casement windows in hardware stores. These handles do not stick out!

Which windows is this window seal suitable for?

Our made-to-measure acrylic window seal is designed for most outward-opening windows used with portable air conditioners. The most suitable installation method will depend on your window type, frame dimensions and any protruding hinges or window stays.

Suitable for May not suitable for
Outward-opening casement windows Sliding sash windows
Side-hung casement windows Windows with protruding hardware that prevents the acrylic panel from sitting flush against the frame
Top-hung casement windows
Most timber windows
Most uPVC windows
Some tilt-and-turn windows (depending on hinge position)

If you’re unsure whether your window is suitable, our team can help you determine the best installation method before you place your order.

4 Steps to fit a casement window portable air conditioning window seal

Follow these 4 simple steps and enjoy a cool environment in no time, thanks to the custom-made window seal.

steps

  1. Determine the right mounting method

    You have a choice of mounting with toggles or Velcro. Based on the type of window, you can choose what best fits for your situation.

  2. Take the measurements of your window

    Make sure you measure correctly for your window seal for mobile air conditioners.

  3. Order the required products

    After measuring, you can order your window seal based on the measured dimensions with the corresponding accessories for installation.

  4. Mount your A/C window seal

    Simply install the window seal for the mobile air conditioner on your casement window after receiving your order.

Troubleshooting your window weal

If your installation isn’t quite right, these are usually easy to resolve.

  • The Velcro isn’t sticking properly – Clean the frame thoroughly before applying the adhesive tape and ensure the surface is completely dry.
  • There’s still warm air entering – Inspect the seal around the edge of the panel. Small gaps can usually be eliminated using insulation tape.

Why choose an acrylic window seal for the mobile air conditioner?

Acrylic window seals offer several advantages over temporary fabric window seals and universal window kits. Because each panel is made to your exact measurements, it creates a more secure fit around your window opening, helping your portable air conditioner work more efficiently while providing a cleaner, longer-lasting solution that can be reused year after year.

Window sealing plastic sheet Window sealing fabric Adjustable sliding window set
Easy installation + + + + +
Insulation + + - - -
Soundproof + - - -
Quality + + - +
Cut to size + + -

An acrylic window seal for a mobile air conditioner is very easy to install, it insulates the room from both hot air and noise from outside. You can easily order the acrylic sheet in any shape and size, including a hole for the drain hose.

  • Better insulation for improved cooling – Unlike flexible fabric seals, a rigid acrylic panel creates a more effective barrier around your portable air conditioner hose. This helps reduce the amount of warm outside air entering your room, allowing your air conditioner to cool the space more efficiently.
  • Made to fit your window – Every window seal is manufactured to the measurements you provide, creating a cleaner fit than adjustable or one-size-fits-all alternatives. A precise fit also helps minimise unwanted air gaps around the panel.
  • Built to last – Manufactured from durable 4 mm acrylic, our window seals are designed to withstand repeated seasonal use. At the end of summer, simply remove the panel, clean it if required and store it ready for next year.
  • A cleaner, more practical solution – Unlike temporary fabric window seals that may need replacing after repeated use, acrylic panels provide a neat appearance, are easy to wipe clean and don’t absorb moisture or dust.

Ordering

You order your custom-made window seal for a mobile air conditioner in these four easy steps:

  • Enter the required dimensions Enter the required height and width, together with the diameter of the drain hose + 0.5 cm
  • Add accessories Add the necessary accessories for your installation method to your shopping basket
  • Ordering Order complete? Order now!
  • As soon as we receive your order, we get straight to work. You will immediately receive an order confirmation, and then a ‘Track & Trace’ link for tracking your package as soon as your order is shipped. The accessories for assembling the seal are sent separately to prevent damage to the window seal.

Frequently asked questions