Name: 300X21.9mm linear lenses with 17X83degree for classroom lighting
Model: blackboard lighting lens
Diameter: 300mmx21.9mm
Beam Angle: 17°x83°
LED Type: 2835LED
Name: high efficiency PC material lenses with 20X120degree for blackboard lighting
Model: blackboard lighting lens AJBL300D3030T20120
Diameter: 300mmx27mm
Beam Angle: 20°x120°
LED Type: 2835/3030 LED
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