Prime-Line® Door Knocker And Viewer, Standard, 160 Degree, Brass Plated, S 4090 Calibration check system uses dual

Calibration check system uses dual sensors to automatically double-check each reading

Ideal for permanently wired applications

FloorSense™ Technology - Instinctively detects a change in floor type to optimize cleaning

Sharpie markers make creations that endure

Prime-Line® Door Knocker And Viewer, Standard, 160 Degree, Brass Plated, S 4090 Calibration check system uses dualPrime Line Door Knocker And Viewer, Standard, 160 Degree, Brass Plated, S 4090 Item #: WGB2139245 Prime Line Door Knocker And Viewer, Standard, 160 Degree, Brass Plated, S 4090 Diecast knocker and 160 viewer. Fits doors 1 3 8" to 1 3 4" thick. 1 2" bore. Product Specifications DEPTH INCHES 4 WIDTH INCHES 1 13 16 WEIGHT LBS 0. 24 COLOR FINISH Brass BRAND Prime Line Products CONSTRUCTION Diecast