Check the listing for details. 31 Inch Marble Vanity Top, Bathroom Vanity Top with Undermount Rectangular Mid. Color: White Marble, Condition: New. Listed at 339.09 USD. Dimensions: vanity top measures 31 inches wide by 22 inches deep, 4-inch high backsplash ,to fit perfectly into most standard 30" W x 21" D size vanity cabinets. Color: the vanity top features a Carrara white with elegantly veins. Polish finish that complements various bathroom decor styles. Efficient Design: Equipped with a 4-inch backsplash to prevent water damage to the wall, the drip-free edge, and a safety overflow hole to avoid water overflow or spillage. Eco-Friendly: Made from natural materials and recyclable, sintered stone is an environmentally friendly option. Chemical Resistance: Resistant to household chemicals, making it easy to clean with common cleaning products without risk of damage. Stain Resistance: The material is non-.