Twelve Oaks Flooring Foundation Endure Sand Dollar is a dryback - glue down plank vinyl flooring with a 2mm thickness and a 12mil wear layer for lasting durability. Plank dimensions are 7.375" wide by 48.25" long. Each box covers about 37.2 square feet. This product is FloorScore certified, ensuring safety and quality for your space. Category: Vinyl. Brand: Twelve Oaks Flooring. SKU: VDB1458.