Production name: Brass Door Viewer * The detailed description of the Brass Door Viewer: 1. Angle of Coverage: 200°; 2. Material: Solid Brass; 3. Lens: Platstic(PMMA); 4. Conduit Size: Φ14mm; 5. For Door Thickness(mm): 35-60; 40-70; 50-80; 70-120; 6. Head: Φ27mm; 7. Surface Treatment: -P&L; 8. Cover: Partable