Twelve Oaks Flooring Solidcore 5GI Gold Coast is a spc - click plank vinyl flooring with a 5mm thickness and a 12mil wear layer for lasting durability. Plank dimensions are 7" wide by 48" long. It includes built-in underlayment for added comfort and sound control. Each box covers about 28.4 square feet. This product is FloorScore certified, ensuring safety and quality for your space. Category: Vinyl. Brand: Twelve Oaks Flooring. SKU: VRG950-C.