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Open in CircadianLab to place this fixture in a room and calculate melanopic lux (EML), illuminance, UGR glare, and WELL v2 compliance — with radiosity simulation and real IES photometry. Free, no signup.
Lithonia Lighting Flat Panel / CPX — CPX_2x4_4000LMHE_80CRI_35K_A12
CPX 2x4 4000LMHE 80CRI 40K A12
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Polar Plot (2D)
Goniometer (3D)
Beam Analysis
Photometric Specifications
About this Photometric File
This page presents the IES photometric distribution for the Flat Panel / CPX — CPX_2x4_4000LMHE_80CRI_35K_A12 from Lithonia Lighting, a Acuity Brands brand. This product line is published as 3 variants — typically different CCT and CRI combinations of the same luminaire optic. Use the variant selector above to switch between them.
You can use this fixture in CircadianLab to design lighting layouts and calculate melanopic equivalent lux (EML), illuminance in lux or foot-candles, and UGR glare ratings — all in your browser, free, with no signup required.
Note on photometric plots: All plots on this page treat the luminaire as a point source emitting from its photometric center, which is the standard convention for IES LM-63 data.
Disclaimer: Innerscene does not manufacture, sell, or distribute the Flat Panel / CPX — CPX_2x4_4000LMHE_80CRI_35K_A12 or any other Lithonia Lighting products. This page is provided for informational and lighting-design purposes only, using publicly available photometric data. For product inquiries, pricing, or availability, please contact Lithonia Lighting (Acuity Brands) directly.