Robern SLB16D4 M Series Safety Lock Box For MP/MT Cabinets, 15-Inch W by 2-3/4-Inch D Compatible with M Series (MP/MT), PL Series (PLM/PLW), C Series (MFC/BFC,TFC) and Fairhaven cabinets Rust free aluminum construction Full compartment keyed lock box 15-Inch W by 2-3/4-Inch D