door viewer with hole size 2-3/8" or 2-1/8"
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Door viewer is a revolutionary product which virtually eliminates
the conventional Peephole. With Door viewer, you don't have
to approach the door nor strain to see visitor through peephole
any more, because you receive a sharp clear image of the
outside visitor up to seven feet away from inside your door.
Chengdu X&W Optical Factory, founded in the year 1994, is a leading
manufacturer of optical products in China, and espcializing in a vast range of
optical products: door viewer, lenses, jewels magnifiers, prism , reading glass,
glass bottle and other optical products with production capacity of more than
1.5 millions pieces annually.