Biyork Floors Hydrogen 5 PRO 3mm Everest is a dryback - glue down plank vinyl flooring with a 3mm thickness and a 12mil wear layer for lasting durability. Plank dimensions are 7.36" wide by 48.3" long. Each box covers about 39.52 square feet. This product is FloorScore certified, ensuring safety and quality for your space. Category: Vinyl. Brand: Biyork Floors. SKU: BYKH5PRO20EV.