A "clear-image" prism allows arms length viewing. High-impact plastic housing requires a 1-3/4" (44 mm) diameter hole. Fit 1-3/8" to 2" (35 to 51 mm) thick doors. Prism image produces a reversed or mirrored image. Each package contains one viewer with installation instructions.

Most shipping weights are approximate and have not been verified. If the exact weight is needed in order to determine shipping costs, and shipping costs are required in order for you to complete your order, please request this prior to submitting your order by contacting CRL Customer Service. Product images shown are of the actual product or a close representation. ColorsColours can vary depending on your computer's video card and on how your monitor's colorcolour is adjusted.