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    Most extensive stock of acrylic in EuropeAcrylic for professionalsOrdered before 10:00, next working day at home (Only in the Netherlands)

    Cast acrylic opal sheets (optically pure, various thicknesses)

    Cast Plexiglass® opal sheets on stock in various thicknesses and light transmissionsFrom 46,12 per m2 ex VAT
    opal sheets cast acrylicopal sheets cast acrylicopal sheets cast acrylicopal sheets cast acrylicopal sheets cast acrylic
    opal sheets cast acrylic
    opal sheets cast acrylic
    opal sheets cast acrylic
    opal sheets cast acrylic
    opal sheets cast acrylic
    Want to fabricate a product?

    Do you want us to mill, laser-cut, glue, bend or drill your material for example?

    Mail to: sales@pyrasied.nl
    Call us at: 058 – 76 76 100

    Select options
    Decrease (m2)
    Price per piece: €0,-
    Order sample
    • 3mm – 20 mm thickness
    • Various light transmissions
    • Diverse surface structures
    Want to fabricate a product?

    Do you want us to mill, laser-cut, glue, bend or drill your material for example?

    Mail to: sales@pyrasied.nl
    Call us at: 058 – 76 76 100

    Maximum size

    3 – 5 mm: 3050×2050 mm
    6 – 10 mm: 3020×2020 mm

    • Product details

    • Characteristics

    • Technical specifications

    • FAQ

    Cast acrylic opal sheets are having the best light technical characteristics, are UV stable, colourfast. The opal sheets from PyraSied are excellent to be used as light diffusers because they transmit light up to 60%! PyraSied is having a great diversity of cast acrylic opal sheets with varying characteristics and properties. You can choose from various light transmissions, surface structures and thicknesses. Each application sets different requirements and with our different opal sheets we offer you the desired flexibility.

    Stock Cast acrylic opal sheets

    On this page, you can see the available stock of all our cast acrylic opal sheets. Cast acrylic opal sheets are on stock in various thickness up to 20mm and in various light transmissions. You have the option between standard, professional and advanced diffusers. The difference is the light transmission and the diffusion of each sheet. Cast acrylic sheets know a thickness tolerance. If you would like to have opal sheets with the advantages of acrylic, but without the thickness tolerance? Then we recommend to use opal sheets that are made of extruded acrylic. Extruded acrylic sheets knows no thickness tolerance.


    The thicker diffuser sheets (15 mm and 20 mm) offer sufficient firmness for applications such as counters. The opal sheets from PyraSied are often used for beautiful luminous counters such as the counter of Philips Lighting. The material is also suitable for luminous floorboards or for bridges that must withstand weight.

    For inspiration, please take a look on our Acrylic Community.


    Sawing, milling, laser-cutting, warm bending, gluing, drilling, faceting, polishing, matting and printing.

    For more information about fabricating acrylics, please go to our fabrication page.

    Brand names

    PyraSied has cast acrylic opal sheets on stock with the following brand names: PyraLed3, OPY 1, OPY 2 and OPY 3.

    Well-known brand names for acrylic are Plexiglass®, Perspex®, Altuglas®, Astariglas® and Versato®.

    More information about the light diffusers:


    acrylic / plexiglass® / acrylglas, light diffusers






    gloss, one-sided satin, two-sided matte, two-sided satin

    Light transmission:

    < 30%, 30-60%, 60-90%

    Thickness in mm:

    2, 3, 4, 5, 6, 8, 10, 15, 20


    1113QN 3mm LT=58%, 1113QN 4mm LT=50%, light opal 51100 LT= ±72%, M2005 LT= ±84%, M2006 LT= ±30%, PyraLed OPY2 BS LT=81%, PyraLed OPY2 LT=81%, PyraLed OPY3 10mm LT=38%, PyraLed OPY3 BS 10mm LT=35%, PyraLed OPY3 BS 3mm LT=56%, PyraLed3 10mm LT=29%, PyraLed3 20mm LT=16%, PyraLed4 3mm LT=53%, Setacryl GS 2002 3mm LT=48%, Setacryl GS 2002 5mm LT=48%, SetaLed® 3mm LT=59%


    spreading light, UV resistant


    bar- and counter fronts, decors, displays, furniture, light diffusers, lighting fixtures, partition walls, reactors, retail design, signage


    architecture, decor building, interior building, laser/engraving companies, Light, plastic fabricators/trade, retail design, signage & advertising, yacht & marine building

    Technical specifications
    Coefficient of expansion:
    0,6 mm/m/10ºC
    1,19 g/cm3
    Thickness tolerance:
    0,4mm +/- 10% of the nominal thickness
    Saw tolerance:
    +/- 1mm
    Deviation angularity:
    1,5 mm/1m
    3300 MPA
    Fire classification:
    E according to EN13501
    Bending strength:
    1200 kg/cm
    User Temperature:
    -40ºC - 80ºC
    Clean cut
    Protective film:
    All sheets are provided with a PE-protective foil (two-sided)
    Frequently Asked Questions
    When do I choose for an acrylic (Plexiglass®) light diffuser?

    Acrylic is having the best light technical characteristics. Therefore, the starting point for the selection of material is always to choose acrylic. Acrylic has a very high light transmission and is completely 100% colourless. It is UV stable, colour proof, temperature resistant to 80ºC, quite rigid, resistant to many chemicals and 100% recyclable. The fire rating of acrylic is E according to EN13501.

    When do I choose for a polycarbonate (lexaan®) light diffuser?

    We advise to use polycarbonate light diffusers when the diffuser has to be impact resistant or when fire certification Bs1d0 is necessary. Polycarbonate is having a high resistance to temperatures up to 120ºC and barely knows any thickness tolerance. Polycarbonate is less rigid and can therefore be cold bended. Polycarbonate is not UV stable, but many polycarbonate light diffusers are UV proof produced.

    When do I choose for a PETG (vivak®) light diffuser?

    PETG has the advantage that in case of fire less toxic gases are released than in the case of polycarbonate. That is why PETG can only be used at airports for example. Another major advantage is that PETG is food grade certified, can be warm bended and the maximum user temperature is 70ºC.

    What is the difference between standard, professional and advanced light diffusers?

    Standard diffusers are also known as classical opal sheets. The standard diffusers are having a light transmission of 30%, are having good characteristics and are price-favourable. These sheets are type M2006, which are on stock in 3 mm up to 10 mm thickness.
    Professional diffusers are having a high light transmission of 30% to 60% and still has a good diffusion. These sheets are also price-favourable. Especially when you look at the output of the sheets. These sheets are also known as PyraLed® diffusers.
    Advanced diffusers are optimized diffusers with the very best characteristics. The highest light transmission combined with still an excellent diffusion. This combination means high efficiency. Advanced diffusers are truly the best diffusers with a matching price. The advanced diffuser sheets made of acrylic are also known as OPY diffusers.

    What is light transmission?

    The light transmission is the amount of light that is measured on the other side of the light diffuser then where the light source is situated. With other words, the percentage of light that is transmitted through the sheet.

    What is diffusion?

    Diffusion is light scattering. The most common requirement for light diffusers is that the dots of the LEDs should not be visible anymore. But that's not enough. The light surface must also be even.

    What is efficiency?

    The efficiency of the light diffusers is the amount of light transmission multiplied with the diffusion. The higher the number, the more efficient is the diffuser. This is our goal, a maximum possible light transmission and the greatest possible diffusion.

    Which light diffusers does PyraSied have on stock?

    Since there are so many different applications and so many different light sources with a very diverse range of light spectra, angles of egress and temperatures, we have put together a broad range of diffusers with disparate characteristics and properties. Nearly every application comes with its own requirements. With our collection, we want to offer you the desired flexibility. We have light diffusers in stock in sheets, tubes and round rods.

    Can I order samples of cast acrylic sheets?

    Yes, it is possible to order samples of cast acrylic sheets. You can choose the light transmission (30%, 30-60%, 60-90%), the surface structure (gloss and satin) and the type of light diffuser.

    Related materials
    PyraSied: Total supplier for acrylics, polycarbonate and design plastics

    More than 30 years of experience in performance plastics

    Plastic wholesaler

    We deliver quickly, cut to size and always from our own stock everywhere in Europe


    We are plastic specialists and provide customized services for all, both serially tailored to your supply chain and one-offs


    We develop new design and colour collections annually and guide customer-specific acrylic production for projects

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