Pro Source 160 Degree Door Viewer / Peephole, 5 Per Pack, 10 Packs
The lens of this viewer is made of plastic, and it features a 160-degree angle of view. Viewer can be installed on doors from 1-3/8 in. thick to 2-1/8 in. thick, with a required 9/16 in. Easy to install and it is used by many.