Use this fixture in a lighting design
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 Troffer / BLT Series Tunable White — BLT4_TUWH_RHYR_20L_SDP_2700K
BLT4 TUWH RHYR 20L SDP 4500K
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Polar Plot (2D)
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Photometric Specifications
About this Photometric File
This page presents the IES photometric distribution for the Troffer / BLT Series Tunable White — BLT4_TUWH_RHYR_20L_SDP_2700K 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 Troffer / BLT Series Tunable White — BLT4_TUWH_RHYR_20L_SDP_2700K 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.