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Accurate cutting. Fast turnaround and delivery. Great choice.
customer,
2 hours ago
Verified
Very good
Very good, exactly what I asked for and delivered brilliantly. Can't fault the service at all. Thank you 👏
Sean Ditchburn,
2 hours ago
Verified
Faultless process and perfect parts.
Great company... Delivered on time and we'll packaged to avoid damage. Measurements were exact to specification and communication was clear. Definitely would use again.
Jason,
2 hours ago
Verified
Easy to order
Easy to order, good range of product,parcel very well packed .
Julia Miller,
7 hours ago
Verified
Great service
First piece arrived cracked, contacted cut my and they quickly replaced the splash back. Great service and fits like a glove
Darren,
18 hours ago
Verified
Great service and just the thing
Great service and just the thing
Anthony,
19 hours ago
Verified
Perfect
Perfect! Thanks so much
Brian,
20 hours ago
Verified
Exactly what I asked for
Exactly what I asked for. Easy ordering. Prompt delivery. Good product.
Emma Richards,
21 hours ago
Verified
Excellent service will definitely…
Excellent service will definitely recommend them - brilliant- thankyou
Ellie Harrison,
23 hours ago
Verified
Good job again
2nd time using this company. good communicatiopns from the as they wanted to get it all right
Peter Morrison,
23 hours ago
Verified
Excellent radiator shelf
The product arrived in good condition with excellent packaging. It is a high quality product which blends well with our other kitchen surfaces
Mr C R Munro,
1 day ago
Verified
I loved the options available and it…
I loved the options available and it was just so easy to make exactly what was needed.
I already have another project in my head which will use this service again.
Easy to use service on app.
Product as described.
Good price.
Very quick delivery.
Nicholas Elliott,
1 day ago
Verified
first time user
keeped me informed of delivery, very good service
Mr J Gooding,
1 day ago
Verified
Website easy to use to input your…
Website easy to use to input your measurements, perfectly cut and delivered securely packaged to prevent damage.
Mark Donnelly,
1 day ago
Verified
Quick efficient service
Quick efficient service
John,
1 day ago
Verified
Ordered a 25 mm clear acrylic plinth…
Ordered a 25 mm clear acrylic plinth for my turntable. Arrived quickly and well packaged. So pleased, the quality and finish was amazing, could not be bettered for this price.
Graham Merritt,
1 day ago
Verified
Will recommend !
Very prompt
Accurate
Professional
Helpful website.
Say goodbye to inefficient cooling with our premium custom-cut acrylic window seal. We offer either a crystal-clear 4mm acrylic sheet or a 5mm opal acrylic sheet to create a perfect seal around your air conditioner hose, keeping hot air outside where it belongs. This precision-cut panel closes gaps around your open window, blocking hot air from entering while allowing your AC’s exhaust hose to vent outdoors.
Made from durable, crystal-clear acrylic, it maintains your view while delivering excellent insulation. Order your custom size to fit any window, complete with a custom cut-out hole to match the size of your AC drain hose.
Ideal for renters and homeowners alike, this reusable window seal is easy to install and remove seasonally. Prevent energy waste, keep your room cooler, and reduce your electricity bills with this effective AC window sealing solution.
How to Order Your AC Unit Window Seal
We offer two acrylic options for your AC unit window seal:
4mm Clear Acrylic – A transparent option that allows maximum light into your room while maintaining a clear view outside. 5mm Opal Acrylic – A privacy-friendly sheet that still lets natural light through but obscures the view for added discretion. Ideal if you want privacy without blocking daylight.
Measure Your Window
1. Measure the open window space (the gap you want to cover). 2. Add 40mm to both the width and the height to allow for the 20mm tape area around each edge.
Example: If your opening is 500mm × 600mm, you will enter 540mm × 640mm as your total size.
Select Cutout for AC Hose
Tick "Yes" to Cutout for AC Hose in the additional options.
Choose the correct shape for your AC hose ducting (Rectangle or Circle).
Enter your hose diameter in millimetres.
You can also adjust the cutout position to match your setup.
Add Hook and Loop Tape
Add the Hook and Loop Tape accessory to secure the sheet to your window frame. Each roll is 5 metres long - choose the quantity based on your total window perimeter.
Derek, one of our customers, used our 5mm opal acrylic sheet cut to size to make a custom air con unit window cover for his bedroom. The opal finish was perfect for blocking early morning sunlight while still letting in a soft glow. He fixed the acrylic to the window frame with tape for an easy, removable fit and added a low-cost sliding panel kit (bought elsewhere) to allow access to the window handle. This simple DIY project keeps cool air in, blocks unwanted light, and creates a modern, tidy appearance — showing just how versatile opal acrylic is for custom AC window seals.
Installation
Prepare the Window
Fully open the window you’ll use with your portable air conditioner.
Clean the frame thoroughly to remove dust, dirt, or moisture.
A clean surface ensures the acrylic panel sits flush and any tape or seals adhere well.
Check Your Panel
Verify the dimensions match your window opening.
Confirm the hose hole is the correct size for your exhaust.
Check that the hole is at a usable height for your AC unit.
Install the Panel
Attach the soft (loop) side of the tape to your window frame along the edges.
Stick the rough (hook) side to the edges of the acrylic panel.
Press the panel firmly into place so the tape bonds securely.
Provides easy, tool-free, removable installation—ideal for renters!
Connect the Exhaust Hose
Insert the AC exhaust hose through the pre-cut hole.
Ensure a snug fit.
Optional - Seal any small gaps with foam or tape for maximum efficiency.
Turn on your AC - all done!
Removal & Storage
To remove, simply detach the exhaust hose.
Gently pull the panel free, especially if using hook-and-loop tape.
Clean and dry before storing flat or upright to prevent scratches.
Frequently Asked Questions
Have a question? You can find answers to commonly asked questions about our products, delivery, returns, cancellations and more on our FAQs page
Alternatively, for help and assistance, you can use our Live Chat or reach out to us via email using the contact form on our Contact Us page.
The skirt type window seal that came with my air con unit, was sent flying out of the window along with my sanity!
So I looked for a better solution and found "Cut My". Great website, I did get a little confused when trying to work out where to have the hole cut but as you can see I think I nailed it. I can still partly lower my electric blind to help block the afternoon sun. Great service, and sanity restored.
Verified, Collected by Cut My
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Delivery Options
For 4mm Clear Acrylic Air Conditioner Window Seal
Sorry, we are unable to deliver to this address. To see our service areas, please read our delivery policy.
If you are going to be in the area and would like to proceed with the purchase for collection, please contact us on 01903 389024 or email [email protected].
Estimated Arrival
Estimated Cost
Collection Options
From BN5 9XR
Estimated Arrival
Estimated Cost
Arrival dates and shipping costs shown above are estimates. See exact dates and costs and select your preferred shipping option during checkout. For more details on delivery speeds, pricing, and location, please view our delivery policy.
