Overall size: 320mm x 400mm
Fresnel size: 320mm x 400mm
Thickness: 1.8mm
Material: optical acrylic
Groove pitch: 0.2mm (127 grooves per inch)
Focal length: 330mm
Application: Solar energy collector system, start a fire under sunlight, hot water heater, solar furnace, LCD projector, computer screen magnifier, virtual reality game flight simulator, computer simulation game, TV magnifier ...

Quantity   Unit price
   50~       $19.68
   25~       $21.87
   10~       $24.30
    5~       $25.65