we are offering plastic door viewer. advance optical technologies in our "f&na" door viewer series. users can visitors outside the door at the distance of one meter to the far & near amphibious optical system without saying close to it. basic parameters: angle: 180° case material: plastic lens material: pmma tube diameter: 26mm head diameter: 35mm door thickness: 30-45mm 40-55mm 60-75mm 75-90mm finish: -g (golden plated plastic) package: plastic bag, carton box 3026g30-45 12pcsinner plastic bag, 1350pcsbox 3026g40-55 12pcsinner plastic bag, 900pcsbox 3026g60-75 12pcsinner plastic bag, 720pcsbox 3026g75-90 12pcsinner plastic bag, 600pcsbox optional finshes: -g (golden plated plastic) -cr (chrome plated plastic) -uvg (golden plated plastic) -ab (antique plated plastic) moq:1000pcs www.doorviewer-china.com