The kit do not include the fan, please buy separately, if you need it.
Kit with lens: 30pcs 1W light beads, needn't use fan ; 30pcs 3W light beads, must use fan.
Summary: When the power is greater than 30W, the heatsink must be installed. Otherwise, it will seriously affect the LED life.
Aluminum base plate thickness: 2mm
Material: glass cover: ultra-white tempered glass ；lens: acrylic.