• Length: 5-15/16"
• Width: 3"
• Projection: 1-1/16"
• Mounting hole center-to-center: 3-15/16"

The Ives Knocker with U701 Viewer is a door knocker with a one way narrow angle door viewer which offers a 120 degree angle of vision and is suitable for doors 1-5/8" to 2-1/8" thick. Suggested installation is 60" from the floor and is tamper resistant.