Perspex® LED Light Diffusing Opal Acrylic Disc
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From £1.85 inc VAT
From £1.85 inc VAT
VuPlex® Plastic Cleaner & Anti Static Polish
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Unipol Plastic Polish - 125ml
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Unipol Acrylic/Perspex Polish & Restoration Kit
Use Unipol Plastic Polish & Restoration kit to revive dull and scratched plastic surfaces. Helps to remove light scratching, haziness and yellowing. Suitable for non-grained plastics including acrylic, polycarbonate and polyester surfaces. Kit includes Polish, Sandpaper and Microfibre cloth.
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Plastic Weld Solvent
This solvent sticks all normal model making plastics, i.e. perspex, ABS, butyrate, styrene, acrylic etc. It has a long shelf life, is fast acting (grabs in seconds), and has a water-like consistency so it is best used by holding or clamping the surfaces together and running a loaded brush or applicator along the length of the joint (solvent will be drawn into the joint by capillary action).
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Bespoke Fabrication
We have the machinery and expertise to manufacture bespoke items in acrylic, polycarbonate and many other plastics, from one-offs to large production runs. Read more about the various services we offer, or complete the form below to request a quote.
CNC Routing
Our advanced Multicam Apex 3R (3 Axis) CNC routers allow us to provide an extensive range of precision CNC routing services. Read more
CNC Laser Cutting
Laser cutting is a fabrication process that uses a thin, intensely focused stream of light to cut through a range of different materials, including plastics and acrylics. Read more
Diamond & Flame polishing
Edge polishing is a fabrication process that polishes the edges of acrylic panels, removes any cutting marks, and achieves a smooth, glossy finish. Read more
Rotary & Laser Engraving
Laser engraving is a fabrication process that uses a laser beam to physically remove the surface of a material to create an indentation that is noticeable to both the eye and touch. Read more
Line Bending
Line bending is a process that’s used to make precise folds in plastic and acrylic components. Our line bending fabrication service allows us to bend plastic and acrylic sheets along a defined ‘line’ – without any need for gluing or joining. Read more
Have bespoke requirements?
Complete this form and we will get back to you with a quote.
Perspex Opal 1TL1 and 1TL2 are part of the Perspex Spectrum range, using perspex cast acrylic sheet formulated specifically to optimize performance when used with LED lighting.
Key features
- Even diffusion of LED lighting
- Elimination of 'hotspots' caused by individual LED diodes
- Supplied in diameters up to 2020mm
- Available in 3mm and 5mm thicknesses
- Opal (off-white) gloss finish
- Lightweight
- Recyclable
Typical applications
- Replacement diffusers for downlights
- Office lighting
- Exterior lighting
- Retail lighting
- Signage
- Light box systems
Detailed description
Elimination of hotspots
Unlike standard light diffusing materials, Led diffusing material ensures light from individual LED diodes are not visible ‘hotspots’. Light is diffused and dispersed throughout the material displaying light evenly.
Disc size/diameters available
Discs are available in diameters up to 2020mm.
Thicknesses available
3mm and 5mm
Finish
Without a light source the discs are opal (off-white) in colour with a slight gloss surface finish. The temperature of the light when lit is dependent on the light source.
Recyclable
Acrylic light diffusing materials are fully recyclable.
Brands
Perspex®
Country of Manufacture
UK
Minimum disc diameter
30mm
Maximum disc diameter
2020mm
Relative Density
1.19 g/cm³
Manufacturers thickness tolerance
+/- 10 % plus 0.4mm (e.g. 5mm cast sheet could vary from 4.1mm to 5.9mm)
Cutting tolerance
+/- 1mm
Material protection
Protective film on both sides
Fire rating
UK Class 3
Service temperature
-40 to 80°c
Vicat softening temperature
>110°c
Water absorption
0.2%
Material Name/Scientific Name
Poly(methyl methacrylate) "PMMA
Manufacturers guarantee
10 Year against discolouration
Recyclable
Yes
Recycled content
Maximum 3%
Data sheets
Colour availability & light transmission
Standard
Non-standard
Not available
Out of stock
Limited stock
| 3mm (LT) | 5mm (LT) | |
|---|---|---|
|
Opal 1TL1
|
(36%) | (36%) |
|
Opal 1TL2
|
(48%) | (48%) |
We provide a fast delivery service throughout the UK using recognised Couriers such as Royal Mail, DHL, and Parcel Force.
Delivery prices are calculated based on the length of the longest side of the material ordered i.e. the delivery price of a panel measuring 1500mm x 1000mm would be based on the 1500mm dimension. Only one delivery charge is charged per order regardless of how many items are ordered.
UK Delivery costs
| Longest side | Standard Delivery | Express Delivery | Order value for FREE delivery |
|---|---|---|---|
| Samples (100mm x 100mm) | £2.95 | £9.95 | £250 |
| Less than 500mm | £6.95 | £12.95 | £250 |
| 500mm to 999mm | £9.95 | £19.95 | £250 |
| 1000mm to 1999mm | £14.95 | £24.95 | £250 |
| 2000mm or greater | £19.95 | £29.95 | £250 |
Standard delivery for all accessories is £7.95, or £12.95 for Express delivery.
All prices listed include VAT.
Delivery Times
Our guidelines for delivery times are listed 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 are prioritised over standard orders and delivered using a recognised nationwide courier.
Next Day Delivery
Next Day delivery is not available via our website due to the volume and bespoke nature 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.
European/EU Delivery
We have temporarily disabled European delivery for orders placed through our website whilst we make changes to ensure that the correct rate of EU VAT is being charged. Our team can however manually process orders so please contact us if you require delivery to the European Union.
Remote Areas
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 fulfill the order. In these extremely rare circumstances, the customer will be contacted first to discuss alternative options.
When delivering to some locations we can incur increased Courier delivery costs. Should delivery be required to one of the locations listed below a remote area supplement will be automatically added to the price of delivery during the checkout process.
| Longest side | Remote area supplement |
|---|---|
| Samples (100mm x 100mm) | £0.00 |
| Less than 500mm | £0.00 |
| 500mm to 1499mm | £10.00 |
| 1500mm to 2499mm | £15.00 |
| 2500mm or greater | £20.00 |
All prices listed include VAT.
Examples of delivery locations which may incur a remote area supplement are:
- Channel Islands
- Isle of Man
- Isles of Scilly
- Isle of Wight
- Scottish Islands
- Scottish Highlands
- Remote areas of Scotland
- Northern Ireland
If you require delivery to one of these areas please get in touch to discuss your order.
Third-Party Deliveries
Some products are dispatched directly from the manufacturer and delivered by a third-party courier. If applicable, this is clearly stated on each Product page under the 'Delivery' tab/section.
Can I collect my order from Simply Plastics?
Yes, of course. Orders can be collected from our premises in Colchester, Essex. At the final stage of the checkout process there is a delivery option labelled "Collection/pickup" which is free. Once your order is complete, you will be notified by email along with our address and collection times.
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.
Do you have a minimum order charge or small order fee?
This is a question we are asked fairly regularly due to the previlance of either a minimum order charge or small order fee within the industry.
At Simply Plastics our approach has always been to treat all orders equally, small or large. We want all customers, new and existing, to be able to place orders with us confident that they are only paying for the products and materials that they require. We therefore do not have a minimum order charge or small order fee.
What are polished edges?
When we cut an acrylic sheet to size, the saw blade/router toolbit produces a matte finish on the edges of the panel. We use a technique called diamond polishing to polish the edges to a bright, smooth and glossy finish.
Our diamond edge-polishing machine polishes the edge of acrylic by running a rotating, diamond tipped wheel along the edge of the material.
You can read more about the techniques used to polish Perspex® in our blog post, The Ultimate Guide to Polishing Perspex®.
Whats the difference between Plexiglass and Plexiglas®?
These two terms are pronounced the same and spelt almost identically, however, Plexiglass is the genericized trademark or proprietary emponym that has become synonymous with acrylic sheeting in most of Europe and North America whereas Plexiglas® is the brand name for acrylic sheets manufactured by Röhm GmbH in Germany. Whilst Plexiglass has become the generic trademark for acrylic sheets in Europe and North America, the brand name Perspex® is synonymous with acrylic sheeting in the UK.
Whats the difference between Plexiglas® and Perspex®?
Both Plexiglas® (most commonly spelt Plexiglass) and Perspex® are brand names of Acrylic sheet. Röhm GmbH, based in Germany, are the manufacturers of Plexiglas® whereas Perspex® is manufactured in the UK by Perspex International Limited. Both manufacturers supply a wide range of colours and thicknesses. Whilst the brand names Plexiglas® and Perspex® are different, ultimately the acrylic sheet that they manufacture is the same albeit each manufacturer might tweek the formulation to increase or enhance UV-resistance, light transmission or colour.
Which applications are best suited to Cast or Extruded Acrylic?
When deciding whether Cast Acrylic or Extruded Acrylic is best for your project it’s worth considering the specific application and desired finish you hope to achieve. The table below provides some examples of the most suitable type of acrylic sheet to use for specific applications.
| Cast Acrylic | Extruded Acrylic | |
| Application |
|
|
In our experience, whilst some projects/applications will require specific characteristics of either Cast or Extruded Acrylic, in most cases the choice can be made based on either colour, thickness or cost, as below:
- Clear or Colour: Extruded acrylic is generally only manufactured in clear, black and white and therefore if there is a requirement for any other colour, Cast Acrylic is the only choice.
- Thickness: Cast acrylic is commonly manufactured in thicknesses up to 100mm whereas extruded is generally available in a maximum thickness of 20mm (Simply Plastics stock up to 50mm in Cast and 10mm in Extruded).
- Cost: Extruded is marginally cheaper and therefore any requirement for a large quantity of sheets/panels, where the benefits of cast acrylic are not important, is likely to be more cost effective produced in Extruded acrylic.
Rated 5/5 from 80 reviews
Reviewed by Megan on 01 May, 2025
Received exactly what I needed, and excellent customer support. Would definitely order again.
Reviewed by Gary on 11 Mar, 2025
I use these on my telecine machine to evenly spread the light. This is my second order with simply plastics and each time the service and speed has been great
Reviewed by Matt on 05 Mar, 2025
Great quality, easy to fit and works very well.
Reviewed by Patricia White on 05 Feb, 2025
We bought a director lamp last year which had a glass disc covering the bulb. A few weeks later the lamp was knocked over and the glass smashed. I found this company and ordered a replacement in acrylic and it is perfect! The service was great and it was delivered a few days after we ordered it. The opal finish is even better than the original glass infill as it takes away the glare. Five star service.
Reviewed by Jane Norton on 17 Jan, 2025
Just what I needed. Disk is perfect to diffuse the light from the bottom of ceiling lampshade. Made to measure - brilliant service.
Reviewed by Colin Shaw on 18 Dec, 2024
I required two disks to be cut to use as diffusers for my newly purchased light fittings. I found the web sight very easy to navigate regarding the specifications I wanted. Order arrived exactly as I requested. Extremely pleased.
Reviewed by J. Heron on 27 Nov, 2024
Good product, delivered quickly.
Reviewed by Richard Morris on 18 Oct, 2024
Very clean cut - very well done - just what I needed
Reviewed by PG on 06 Oct, 2024
Great service and exactly what I needed at a very low price.
Reviewed by GORDON KNOTT on 23 Sep, 2024
Excellent product materials and well cut and drilled to customised dimensions.
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