SqFt per Box = 23.77. Made with professional-grade strength, Cali vinyl select flooring wear layer 20milis geared for projects that demand 100% waterproof durability and can be installed and cleaned with ease. With a DIY-friendly design and beautiful hardwood imagery, this luxury vinyl plank flooring is ideal for fast transformations in any room. Planks are strengthened internally by a rigid core spine a proprietary layer of flexible limestone composite which boosts stability and allows for stronger click-lock milling. Never one to sacrifice style for performance, planks also feature authentic hardwood looks, high pattern variation, rich color options, and wood grain textures.