Bottom plate is 10″ x 10″. Holes are 8.25″ center to center. Top plate is 7.5″ x 4″. Spring is 13 5/8″ long and spring with boot is 15″ long. The diameter of the spring coil is .5″ and the diameter of the spring is 5 5/8″. This product should last 2 years in harsh conditions and up to 5 years in optimal conditions. Some conditions may require replacement sooner. Tensile strength is 1200 lbs.
Commercial Swing Sets
8 feet High Elite Single Post Adaptive Swing Playground Equipment