Door viewers / Spyholes
Door viewers are available in 2 sizes to suit the thickness of material they are going to penetrate through.
They are generally to suit materials 20mm - 35mm thick such as door panels. Or secondly 35mm - 55mm thick such as solid core slabs like composite doors.
On instances where there is a thicker requirement there are screw on extensions that increase the length by 20mm increments.
Available in White, Gold, Chrome, And Black
