Biyork Floors Hydrogen 5 PRO 2mm Cashmere is a dryback - glue down plank vinyl flooring with a 2mm thickness and a 12mil wear layer for lasting durability. Plank dimensions are 7.36" wide by 48.3" long. Each box covers about 59.27 square feet. This product is FloorScore certified, ensuring safety and quality for your space. Category: Vinyl. Brand: Biyork Floors. SKU: BYKH5PRO12CA.