Elco Lighting ELK2140D-FC Koto Focus Architectural LED Light Engine, Color Temperature 4000K, Beam Angle 18º - 50ºElco Lighting ELK2140D FC ELK2140D FC Product Description Koto Adjustable Beam 18 50 Angles. Works with 2", 3, 4, 5" and 6" Architectural Koto Housings and Koto Trims Features: Light engine used with Koto Architectural HousingsSee Koto Architectural housings for lumen output optionsDriver on housing extends lifespan and allows for more dimming and EM optionsAdjustable Focus: 18 to 50 with a simple twist of the lensWorks in 2", 3 & 4 ELCO housings with