Round Skylight Diffuser Replacement

(7 customer reviews)


Purchase a round skylight diffuser to replace your old or damaged diffuser and make it look like new again.

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Purchase a round skylight diffuser to replace your old or damaged diffuser and make it look like new again.

Made from strong, UV stabilised acrylic, a new diffuser will perform well for about 20 years. The prismatic (a collection of prisms) design disperses the light passing through, scattering it over a larger area. Additionally, the diffuser softens the lights, reducing glare and decreasing eye strain.

This is a flat sheet diffuser, not domed. See our domed skylight diffusers if you require a domed diffuser.

Round Skylight Diffuser Sizes

  • 300mm diameter (297mm actual)
  • 350mm diameter (345mm actual)
  • 400mm diameter (385mm actual)
  • 500mm diameter (490mm actual)
  • 550mm diameter (540mm actual)

Please ensure you order the correct size diffuser by measuring it first.

Shipping & Delivery

Your replacement skylight diffuser is flat packed using thick cardboard to protect it during transport.

Please allow 7 days for delivery from the date of shipping. It may be longer to remote areas or busy period e.g. holidays.


  1. To install your new skylight diffuser, carefully remove the old one.
    NOTE: we recommend wearing gloves to protect your hands from the sharp edges and setting up a ladder to make it easier to access.
  2. You may need to gently bend the diffuser so it bows in the centre to allow it to pass through the ceiling surround.
  3. Wipe the new diffuser with a damp, lint-free cloth to remove any dust.
  4. Insert the new diffuser into the ceiling surround, bending it gently if required, with the prismatic (rough side) facing down.
Weight1 kg
Dimensions55 × 55 × 5 cm

300mm diameter (297mm actual), 350mm diameter (345mm actual), 400mm diameter (385mm actual), 500mm diameter (490mm actual), 550mm diameter (540mm actual)

7 reviews for Round Skylight Diffuser Replacement

4.9 Rating
1-5 of 7 reviews
  1. Perfect fit and great price!

  2. Fit for purpose perfect but the order took weeks to arrive

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