Kohler K-CB-CLR2031OW 20" W x 31" H plastic single-door medicine cabinet with oval mirrored door 20-inchW by 31-inchH by 6-1/4-inchD, White Aluminum cabinet 1/2-inch beveled frameless mirrored door Rust-free aluminum cabinet Recessed applications only Rough opening 14-inch W by 18-inch H - to fit between wall studs