Largo Forged-Brass Back Plate

This lovely Renaissance-style back plate is based on Yale & Towne's "Largo" pattern. The circa 1910 design has been resized to fit modern pre-drilled doors, but also works well with vintage mortise locks. Made of top-quality forged brass, it comes in your choice of six classic finishes.

Dimensions: 8 1/4" H x 2 3/4" W. Inside collar diameter: 5/8".

How do I know what door knobs will work with a particular rosette or door plate? The knob shank diameter should be a little less than the inside collar diameter on the rosette.