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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 £1.01 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 £1.01 inc VAT


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Product description

Prismatic polycarbonate light diffusing sheet is produced with a textured finish on one side optimised specifically to transmit and diffuse light while reducing glare. For use in lighting applications polycarbonate prismatic sheet is available cut to size.

Key features:

  • Prismatic textured finish
  • Light diffusion
  • Excellent light transmission
  • Glare reduction
  • High impact resistance
  • Flame resistant

Typical applications:

  • Fluorescent light fittings
  • Lighting Lenses
  • Ceiling lighting tiles

Further detail:

Light diffusion

The textured finish created by differing structures of prisms on the face of the sheet optimises both light transmission and diffusion while controling glare when used with lighting applications.

High impact resistance

Polycarbonate prismatic sheet is very strong with an extremely high resistance to impact. The sheet is suitable for use in lighting applications in areas where strength and safety is required.

Flame resistant:

Rated with a UK class 1 fire rating; polycarbonate is flame resistant and suitable for use in public buildings where a high fire rating is specified.

Maximum sheet size2500mm x 1250mm
Available thicknesses3mm
Fire resistanceUK class 1 fire rating
Material protectionSupplied with protective film on one side

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.


Ordered prismatic light diffuser for custom made led lights. Order came extremely well protected and fitted perfectly. Really pleased with finished product. Great value and service. Would use again.

Great product as described. Fast delivery and well packaged

We used it in our caravan hall to replace light covers which I had broken caravan is Willerby Vouge 18 years old and parts are hard to find this product was perfect thanks

We used it in our caravan hall to replace light covers which I had broken caravan is Willerby Vouge 18 years old and parts are hard to find this product was perfect thanks

Made light boxes The service delivery and packaging was excellent

Light diffuser for motorhome bathroom ceiling. Cut to my measurements was perfect and a great price too! thank you

Excellent quality, fits in between the lamps and current disfuser perfectly.

I bought these to replace two light diffusers in the kitchen, which were chipped and cracked. These replacements are made of thicker material and seem to be a lot sturdier and also are a better fit.

A bit over size for the light cover, easily trimmed and now fits perfect

I replaced a customers diffusser in his bathroom which had snapped when he took it down to clean. Great product and delivered and despatched with prompt ness deahttps://www.simplyplastics.com/img/star-on.pngpatched

Perfect and cut to size too

Used to diffuse florescent lights. Perfect match for the original.

light diffusers. excellent price, cut to size and delivered on time . I would highly recommend this company and will look to them on our future projects

I used a 500x500 Polycarbonate Prismatic Light Diffusing sheet when creating a prototype for a light which was to be used outdoors. I bought it along with a sheet of Opal Polycarbonate light diffusing sheet, an Opal Polycarbonate (not light diffusing) sheet, a clear Polycarbonate (not light diffusing sheet) sheet and a sheet of the LED light diffusing acrylic. On the plastics sheets I used that were not designed to diffuse light I added a light diffusing film purchased from Maplin. I wanted to see which sheet diffused the light in the most appropriate way, my decision was to go with the Opal Polycarbonate Light diffusing sheet. The prismatic sheet seemed less aesthetic and more flimsy compared to the other sheets of the same thickness.