LED Diffusers


Upgrade your lighting solutions with our wide range of profile LED strip diffusers for a better, smoother lighting effect. By adding one of our high-quality LED diffuser sheets, you can reduce the harshness of the light, allowing for more even lighting distributed throughout the room.

When you browse our plastic LED channel diffusers range, you’ll come across a diverse range of options to select from, including polycarbonate diffusers, acrylic LED sheets, flat surface diffusers made of both rounded and square polycarbonate, and plastic diffusers.

Made from sturdy and resistant polycarbonate, our white opal profile diffusers come in a variety of sizes to suit your needs. Choose from rounded or square versions depending on your aesthetic and functional requirements, these LED Strip Light diffusers can be paired with aluminium profile channels and allow for optimum diffusion of light.

Smart Lighting offers a range of LED light diffusers with various levels of transparency, illumination angles, and shapes. Our collection includes flat plastic diffuser sheets that create a sleek, contemporary appearance and distribute light evenly, rather than creating individual spots. These diffusers are compatible with most LED-coloured lighting systems.

We use only high-quality, durable acrylic materials at Smart Lighting. These materials retain their colour over time and provide adequate transparency, ensuring that the room is illuminated without being overly bright or harsh. Our diffusers are suitable for use in ceiling lighting tiles for homes or offices, signage systems, graphic displays, and most light fittings.

What is an LED diffuser?

LED diffusers even out the spread of LED lighting. They are particularly used with LED lighting strips where the LEDs without diffusion appear as individual lights. By adding a suitable diffuser the strip emits a continuous and even glow – perfect for accenting a feature or creating more interesting ambient light.

Should I use a diffuser for LED lights? What are the benefits of using LED diffusers?

Any lighting feature or installation that uses LED strips will benefit from adding a diffuser. Our LED strips fit neatly into any one of multiple-sized aluminium channels designed to be recessed into floors or ceilings, along corners and edges or surface mounted. Flat, convex or square diffusers fit across the top of the aluminium channels, diffusing the light emitted by the LED strips.

What types of LED diffusers are available on our website?

Diffusers are made from plastic, polycarbonate, or silicone, depending on the degree of diffusion required and the flexibility you need in the material to install them. Diffuser sheets and strips are flat, square, or convex depending on the size and type of aluminium channel you plan to use them with.

What lighting systems are compatible with our LED diffusers?

We have diffusers and aluminium channels that work with all sizes of our LED strips. Choose 120° beam angle LEDs in any colour from cool to warm white to controllable RGB for the most efficient use of our diffusers and channels. We even have bendable diffusers and channels for you to create unique shapes and lighting designs.

How do I install an LED diffuser?

Plastic, polycarbonate or silicone diffusers slide or can be bent gently (in the case of silicone) into a suitable aluminium channel. Channels are then recessed or surface mounted wherever your room needs strip illumination to brighten a dark edge or illuminate under an overhang. Diffusers and channels are priced per meter.

Can I cut LED diffusers to fit my lighting fixtures?

Yes, diffusers of all types can easily be cut to match the length of the channel you use in your lighting project. Angled connecting brackets tie channels and diffusers together and end caps create a neat and tidy finish to any exposed channel terminals.

Can I get assistance with selecting the right LED diffuser for my lighting project?

Our experienced staff are always available to offer help and advice and can be contacted by phone or email here. We can help with choosing the right diffuser, aluminium channel and LED strip combination, as well as the controllers etc that your installation may need.

Are there any warranties offered on LED diffusers purchased from Smart Lighting Industries?

We offer free standard delivery for orders over £50 in 2-4 working days. For next-day deliveries, orders must be placed from Monday to Friday before 3:00 pm (GMT). They will be dispatched by the courier that same day and delivered the next working day. Diffusers do not come with a warranty but if necessary they can be returned. Diffusers must be in the original package, without visible damage, in good condition and postage must be paid by the customer. Please fill out our returns form which can be downloaded here.

How do you diffuse LED light strips?

Use any of our specially designed diffusers by installing your LED lighting strips in one of our aluminium channels. Your choice of channel and diffuser will depend on the position of the LED strip in your room (floor, ceiling, recessed, etc) and the degree of diffusion you require.

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Flat Plastic Diffuser Opal Transparent 32mm
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Flat Plastic Diffuser Opal Transparent 32mm

Original price was: £16.98.Current price is: £12.73. inc. VAT
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High Camber Square Plastic Diffuser Opal 40mm
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Plastic Diffuser Round
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Plastic Diffuser Round

Original price was: £17.75.Current price is: £14.20. inc. VAT
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Round Surface Poly-carbon LED Diffuser 13.0x8.3mm
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Round Surface Poly-carbon LED Diffuser 13.0×8.3mm

Original price was: £3.26.Current price is: £2.61. inc. VAT
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Flat Plastic Diffuser Opal Transparent 97mm
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Flat Plastic Diffuser Opal Transparent 97mm

Original price was: £27.54.Current price is: £22.03. inc. VAT
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Flat LED Profile Diffuser Polycarbonate Opal Sandy 47mm
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Flat LED Profile Diffuser Polycarbonate Opal Sandy 47mm

Original price was: £16.99.Current price is: £13.59. inc. VAT
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High Camber Square Plastic Diffuser Opal 40mm
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High Camber Square Plastic Diffuser Opal 40mm

Original price was: £13.46.Current price is: £10.77. inc. VAT
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Plastic Diffuser Straight Opal Transparent for YA207BY Profile
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Plastic Diffuser Straight Opal Transparent for YA207BY Profile

Original price was: £9.59.Current price is: £7.67. inc. VAT
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Square U-Shape LED Profile Diffuser Polycarbon Opal 18.5x10.7mm
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Square U-Shape LED Profile Diffuser Polycarbon Opal 18.5×10.7mm

Original price was: £4.99.Current price is: £3.99. inc. VAT
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Flat Plastic Diffuser Opal for Outdoor Floor LED Profile 18.3mm
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Flat Plastic Diffuser Opal for Outdoor Floor LED Profile 18.3mm

Original price was: £5.10.Current price is: £4.08. inc. VAT
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Flat Polycarbon LED Profile Opal 11.4mm
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Flat Polycarbon LED Profile Opal 11.4mm

Original price was: £2.24.Current price is: £1.79. inc. VAT
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Round LED Profile Diffuser Polycarbon Opal Transparent 16.8x7.1mm
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Round LED Profile Diffuser Polycarbon Opal Transparent 16.8×7.1mm

Original price was: £3.99.Current price is: £3.19. inc. VAT
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Flat LED Profile Diffuser Polycarbon Opal Transparent 16.4mm
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Flat LED Profile Diffuser Polycarbon Opal Transparent 16.4mm

Original price was: £3.99.Current price is: £3.19. inc. VAT
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Round LED Profile Diffuser Low Camber Polycarbon Opal 18x6mm
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Round LED Profile Diffuser Low Camber Polycarbon Opal 18x6mm

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Round LED Profile Diffuser High Camber Polycarbon Opal 18x9mm
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Round LED Profile Diffuser High Camber Polycarbon Opal 18x9mm

Original price was: £4.99.Current price is: £3.99. inc. VAT
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Round LED Profile Diffuser Polycarbon Transparent Opal 24.8mm
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Round LED Profile Diffuser Polycarbonate Semi-Transparent Opal 24.8mm

Original price was: £4.99.Current price is: £3.99. inc. VAT
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Flat LED Profile Polycarbon Diffuser Opal Transparent 40mm
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Flat LED Profile Polycarbon Diffuser Opal Transparent 40mm

Original price was: £10.99.Current price is: £8.79. inc. VAT
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Flat Surface Polycarbon Diffuser Sandy Opal 64.5mm
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Flat Surface Polycarbon Diffuser Sandy Opal 64.5mm

Original price was: £26.99.Current price is: £21.59. inc. VAT
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