Value Choice 18 Huron Oak 3-Drawer Base Cabinet. Overall Depth: 23.75 inch, Overall Height: 35 inch. Shop 18 Inch Bathroom Vanity – choose from a huge selection of 18 Inch Bathroom Vanity from the most popular online stores at BHG. 24 inches wide x 18 inches deep x 32 1/2 inches high Size: Single Vanities. 531731 Wyndham White Semi-Gloss Vanity Cabinet with 2-Doors 24-Inches by 18. Linen White Bath Vanity Base 30 inches x 21 inches (Linen White Vanity 30 x21), Size Single Vanities.