Fresnel lens(solar panel) Material: PMMA Size: 235X235mm Focal length: 220mm FrFresnel lens(solar panel)Material: PMMASize: 235X235mmFocal length: 220mmesnel lens(Solar panel)Other size available350x350mm, 1040x780mm, 1206x126mm, 1000x860mm, 240x240mmwe can send further information after inquiry. Fresnel lens(Solar panel)