The lamps were well packed in plastic cases and arrived safe and undamaged. However, one of the lights broke during installation and blinked at high and low brightness when power was applied. I originally used these bulbs with a $8 Lutron 600w rotary dimmer and they dimmed well. A day later, I installed a high-end Z-Wave dimmer from Zooz, model ZEN27. As a result, the bulbs began to flicker at any brightness setting below 80%, and the lower the brightness, the more the flickering got worse. Iโฆ