Thanks for the review and great feedback, we'll let the team know re: humidity and packaging. Rock on!

Bought 4 of these for adding side or background colors to live music stages, and I was surprised of the strenght of the lamps - 14x15W RGBW is so strong, that I had to fade back the lamps quite a bit not to overshoot backdrop in restaurant, etc, which makes color blends flicker.
The lamps were not packed too well for international shipping (4 lamps in individual thin boxes simply banded together to form one package), they arrived with some damages on the black powder coatings.
After firing up, lamps developed thin layers on the inside of the glass plate, I assume they were stored/shipped in humid conditions, and some humidity made it inside through the pressure release valves. Might need to open them up later on to clean the glass from the inside, maybe let lamps dry at maximum power.
At the price point (especially with the 18% off coupon), it's an incredible value for money, and will fulfill non-critical applications like a charm.
Oh, and the reason I bought this specific type: no ventilator, they're dead quiet!