Bertch tri-view medicine cabinets are pre-assembled. Available in birch wood. Tri-views come with a 3/16 In. backer in birch with a natural finish. No. P/OBW-TV3433: Finish: White, Dimensions: 34 In. W x 33 In. H x 4-1/4 In. D, Door Type: Tri-View, Mount Type: Surface Mount, Color Family: Whites, Interior Shelves: 9, Rough Opening: N/A, Pkg Qty: 1, Package Type: Box No. P/OBB-TV3433: Finish: Brindle, Dimensions: 34 In. W x 33 In. H x 4-1/4 In. D, Door Type: Tri-View, Mount Type: Surface Mount, Color Family: Browns / Tans, Rough Opening: N/A, Pkg Qty: 1, Package Type: Box