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Our custom acrylic window seals are made to fit your exact window opening, with a precision-cut vent hole sized specifically for your AC hose. This keeps cold air inside, hot air outside, and helps your portable AC cool your room far more efficiently.
Installation is quick, tool-free, and fully removable. At the end of summer, simply take it down and reinstall it again next year.
Important: You only need the exhaust hose from your portable AC unit — the original window adapter is not required.
Our custom acrylic window seals are made to fit your exact window opening, with a precision-cut vent hole sized specifically for your AC hose. This keeps cold air inside, hot air outside, and helps your portable AC cool your room far more efficiently.
Installation is quick, tool-free, and fully removable. At the end of summer, simply take it down and reinstall it next year.
Important: You only need the exhaust hose from your portable AC unit — the original window adapter is not required.
Measure the height × width of the open window gap.
If you are using our velcro to attach the panel, we recommend adding 20mm (or the thickness of the velcro) to both height and width to allow space for the velcro fixing tape to secure the panel to the window.
Select Yes for a cut-out in addition to extras, and upload a simple sketch showing your hose size and shape or list them in the additional instructions — most portable AC units use either 130mm or 150mm hoses.
Location of cutout - Enter the dimensions or approximate position for your cut-out in the order notes. If you need the cut-out placed in an exact location, please upload a simple sketch showing the size and position required. We recommend a minimum of 30mm in from the edge of the panel.
After adding your Air Conditioning Window Panel to the cart, visit our Velcro Tape section and make sure you order enough tape to cover the full perimeter of your panel for a secure fit. Get your Velcro Tape Here.



At Cut Plastic Sheeting, we have a range of excellent quality frosted acrylic sheets that are available in different thicknesses and colours. Frosted acrylic sheets have a matt finish on both sides which gives them a similar effect to sand-blasted or acid-etched glass. Acrylic (also known by the trademarks of Perspex® acrylic or Plexiglass) is a versatile material which is easy to work with, lightweight, strong and safe.
Our high-quality standard cast acrylic frosted sheets are available in a range of colours including clear, opal, violet, blue, red and green acrylic all in 5mm thickness.
The Opal 35% Spectrum LED Light Diffusing Acrylic Sheet is designed specifically to prevent hard light spots. Its light-diffusing properties distribute light evenly and the acrylic material is optimised for use with white LEDs. This 35% light transmission acrylic is available in 3mm, 5mm and 10mm thicknesses.
Acrylic sheets should only be cleaned using hot soapy water and a soft cloth.
The cheapest frosted acrylic sheet is our 3 mm Opal Frosted Acrylic Sheet which is £62.26 ex vat.
Ordering online couldn’t be easier with Cut Plastic Sheeting! Simply select your desired material, choose your thickness and then enter the height and width – or diameter if you require a disc. Then add any optional extras, add it to your basket and checkout!
We offer free mainland UK delivery on all orders. Please view our delivery page for more information on delivery options and contact our sales team for shipping costs outside of the mainland UK.
Get a discounted quote for ordering larger volumes of the same material, size and thickness. Contact our sales team by phone or email for a quotation.
If you do require any assistance or want some further details on our frosted acrylic then please call the sales and customer service team on 01752 917434 or email [email protected].