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Instant prices on cut to size perspex
Cut to size prices
Outstanding customer service
Customer service
Free fast delivery on all plastic sheet
On orders over £150
30+ years experience in the plastics industry
Experience with plastics
From £0.91 inc VAT In stock

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The thickness of the material listed in mm.
The length of the required material, stated in mm. PLEASE NOTE: We only cut material in mm, so please ensure any conversion from inches to millimeters is correct.
The width of the required material, stated in mm. PLEASE NOTE: We only cut material in mm, so please ensure any conversion from inches to millimeters is correct.
The radius for each corner.
Choose the number and positions of the holes you require.

From £0.91 inc VAT


Perspex Price Promise Found a cheaper price? Call us on 01206638056 to see if we can beat it!

Product description

Unlike double glazing, which involves fitting completely new units (with all the associated expense and disruption), fitting secondary glazing is a fast and simple DIY process which helps to reduce heat loss in your home. You simply attach the acrylic panel to your existing windows or window frame using magnetic adhesive tape.

Key features:

  • Excellent optical clarity
  • Strength
  • Light weight
  • Cost-effective
  • Excellent insulating material
  • DIY installation
  • Cut to size
  • Reduced sound levels
  • Shatterproof

High optical clarity

Acrylic sheet benefits from excellent optical clarity, it's as clear as glass so lets light through while keeping the cold out.


Once installed and supported by the magnetic tape, acrylic glazing panels can be easily removed and stored when not required.


Acrylic performs well as an insulating material, providing superior insulation to a sheet of glass of the same thickness, in addition to being cheaper and easier to install and maintain. The thermal conductitity of a material is measured by a property called the 'K value' which refers to the ability of a material to conduct heat. A low K-value is advantageous for insulating materials, as this means heat energy cannot easily pass through. Traditional single pane glass has an average K value of 0.96 whereas our Acrylic and Polycarbonate sheets have a K value between 0.19 and 0.21 which demonstrates why these materials provide superior insulation, in addition to being cheaper and easier to install and maintain.


Fitting secondary glazing is a fast and simple DIY process. You simply attach the acrylic panels to your existing windows or window frames using a magnetic adhesive tape kit. The kit, which must be purchased seperately (see Magnetic & Steel Tape) has two parts, a steel tape which is applied directly to your window or  window frame, and a magnetic tape which is applied to the clear acrylic panel. You can alternatively choose to have holes drilled in the panel, however you will need to ensure that a foam tape is also fitted to all edges of the panel to ensure there are no gaps that allow the heat to escape.

Please note: If you are fitting panels larger than 1.4m x 1m you must use the 19mm wide tape due to the panel being too heavy for the 12.7mm wide tape.

Sound reduction

In addition to reducing heat loss acrylic secondary glazing also reduces noise levels. Acrylic sheet offers sound loss characteristics comparable to glass.


Acrylic secondary glazing is ideal for all homes that have single glazing, period properties with sash windows, buildings where renovations are not possible, and schools, offices and large areas that are difficult to heat adequately during the colder months.

Cut to size

Ordering acrylic glazing panels is easy, simply measure up and order the exact sizes required ready for fitting. Ordering cut to size is not only convenient but reduces waste material keeping costs down.

Please note: This product does not include the magnetic tape which must be purchased seperately.

Maximum size2440mm x 1220mm
Available thicknesses3mm, 4mm - other thicknesses available upon request.
Light transmission92%
Fire ratingUK class 3 fire rating
Cutting tolerance+/- 1mm
Manufacturers thickness tolerance+/- 10 % plus 0.4mm (e.g. 5mm cast sheet could vary from 4.1mm to 5.9mm)

We currently deliver to the UK and throughout Europe. Delivery charges are calculated based on the longest side of the material ordered. Only one delivery charge is applicable per order regardless of how many items are ordered.

Longest side Orders under £150 (inc VAT) Orders over £150 (inc VAT) Express Delivery
Samples £2.95 FREE £9.95
Less than 500mm £5.95 FREE £12.95
500mm to 1999mm £9.95 FREE £14.95
2000mm or greater £14.95 FREE £24.95
Sneeze Guards (All sizes) £9.95 FREE £14.95

Europe (7-10 working days)

Delivery guidelines
We process and dispatch all orders as quickly as possible - our delivery guidelines are as below:

  • Standard delivery (3-5 working days)
  • Express delivery (2-3 working days)

Express Delivery
If you require faster delivery you may wish to consider choosing our Express Delivery option at the checkout. Express Delivery orders will be prioritised and will be delivered using a recognised nationwide courier.

Next Day Delivery
Next Day delivery is not available via our website due to the quantity of orders we receive on a daily basis. However, if you need to place an order and require Next Day delivery please contact us – we will make every effort to meet your requirements and deadlines.

Collection is available from our location in Colchester, Essex (see full address). When placing an order on our website there is an option on the final stage of the checkout for Collection/pickup. Once your order is ready for collection you will be notified via email.

Due to the nature of the ”made to measure” products we supply, we provide delivery prices at a standard rate and reserve the right to cancel an order should it become economically unviable to fulfil the order. In these rare circumstances the customer will be contacted first to discuss alternative options.

When delivering to some delivery locations we can incur increased shipping costs, if this is likely to happen the customer will be contacted to discuss any possible extra delivery charges required.

Examples of delivery locations which may require additional delivery charges are,

  • Channel Islands
  • Scottish Islands
  • Isle of Man
  • Isles of Scilly
  • Remote areas
  • Northern Ireland

If you require delivery to one of these areas please get in touch to discuss your order.

You may also wish to read more detailed information regarding our terms and conditions in relation to delivery.


Will I be notified when my order is out for delivery?

Yes. Simply Plastics will send you an email when your order has been dispatched. If your shipment is trackable the email will contain tracking details and a link to the delivery couriers website, where you can track the progress of the shipment.

I need my order urgently, can I pay for faster shipping?

Yes. We offer an express delivery service which aims to deliver all orders in 1-3 working days. Orders are delivered by a recognised courier company and may require a signature on delivery.

Can I collect my order from Simply Plastics?

Yes, of course. At the final stage of the checkout process there is a delivery option labelled "Collection/pickup" which is free. When your order is ready for collection you will receive an email to notify you, which includes our opening times and address.

Collection -example

Can Simply Plastics help me with a fabrication project?

Yes we can. Customised, cut-to-size materials can be ordered directly through the website, but if you require further fabrication we can help you with this too.

Our fabrication services include,

  • CNC routing
  • Bending
  • Shaping
  • Bonding/glueing
  • Diamond polishing
  • Flame polishing
  • Intricate laser cutting

Examples of fabricated products include,

  • Acrylic display cases
  • Point of sale 
  • Retail display
  • Lighting applications
  • Brochure holders
  • 2D/3D Acrylic lettering
  • Furniture
  • Office Interiors

For enquiries regarding any project from prototypes to large production runs, please get in touch to discuss your requirements.


Very happy with the product and the speed of delivery. Noticing the benefits of the secondary double glazing already. No more condensation on our single glazed windows.

Secondary glazed our bedroom windows with SP projects. Really easy and very efficient.