This is a Switronix TLF Pop-on Filter Set for the TL-50 and TL-68 LED fixtures. The clear filter acts as a protector to the LEDs. The frosted filter acts as a mild diffuser and diminisher. The 3200°K filter allows you to match ambient light when working indoors.
Switronix Pop-on Filter Set for TL-50, TL-68 LED Fixtures