SASI 500 x 500 Air Handling Luminaire. Utilises high intensity Samsung LED's to achieve up to 85 lumens per circuit Watt with CRI options available of up to CRI90. Matte White finished Aluminium surround with PMMA diffuser. Product can be adjusted to fit within any ceiling grid. Compliant with DALI or 0-10V protocols. 3 Hour emergency version available.