CS-CFL LED Replacement for 4-pin CFL
The Permalamp™ Series of LED plug and play replacements for CFL lamps provides 1350 lumens per lamp and is compatible with most existing electronic ballasts. Available in 3000,4000, and 5000K and both vertical and horizontal mounting positions these LED plug and play lamps are ideal for any indoor existing 4 pin CFL application.
U.S. Patent No. 9714743