The Rocky Mountain Hardware Marvin Double-Hung Sash Lock is hand-cast in solid bronze and finished with a hand-applied living patina that develops character over time.
- Compatible with Marvin Ultimate double hung magnum.
- Model WD130.
- Metal: silicon bronze or white bronze
- Patinas: Brushed, Light, Medium, Dark, Dark Lustre and Rust (silicon bronze only), High Polished
- Made to order by Rocky Mountain Hardware in Hailey, Idaho