Fastest strip LED retro for 4 ft and 8 ft fluorescent strip fixtures

4 and 8 foot led retro strip for taking an existing fluorescent lighting fixture and changing it to an all LED light. This saves thousands on in energy costs. Screw down option: https://www.warehouse-lighting.com/products/4-foot-strip-led-retrofit-kit-18-watt-120-277v Magnetic options: 4 foot options: https://www.warehouse-lighting.com/products/led-magnetic-strip-retrofit-kit-for-2ftx4ft-troffer-or-industrial-strip-fixtures-50-watt-120-277v 8 foot options https://www.warehouse-lighting.com/products/lensed-led-magnetic-strip-retrofit-kit-for-8-foot-strip-fixtures-50-watt-120-277v