MORTISE LOCK SET ORBRNZ *Brand Name: Prime-Line *Sub Brand: Security *Finish: Oil Rubbed Bronze *Product Type: Mortise Lockset *Security Grade: Grade 1 *Maximum Door Thickness: 1-3/4 in. *Material: Steel *Faceplate Material: Steel *MinimumDoor Thickness: 1-3/8 in. *Door Direction: Left or Right Handed *Indoor or Outdoor: Indoor and Outdoor *Backset Length:2-3/8 in. *Trim Rings: Yes *Packaging Type: Carded *Commercial or Residential: Commercial and Residential