Endurance TF3i Folding Treadmill Easy-to-use foot release, assisted folding mechanism, and sturdy mobile transport wheels make for easy rolling Heavy-duty 2-by-3-inch and 2-by-4-inch steel frame construction Multi-ply tread belts are fusion-seamed for strength, flexibility, and smooth travel Endurance motors are designed to exceed horsepower and performance standards for home-use treadmills Floor Space: 31 by 63.5 by 54 inches (W x D x H)